Method and device for providing at least one fragrance ingredient post-wash deposition remaining quantity

Abstract

The method (100) for providing at least one fragrance ingredient post-wash deposition remaining quantity comprises: - a step (105) of defining a fragrance composition digital identifier, representing a materializable fragrance composition, comprising: - a step (110) of adding at least one fragrance ingredient digital identifier and - a step (115) of inputting at least one fragrance base digital identifier, representing a materializable fragrance base, - a step (120) of selecting a deposition surface type digital identifier, representing a material deposition surface type, - a step (125) of retrieving, from a database, at least one physico-chemical property, - a step (130) of computing at least one fragrance ingredient post-wash deposition remaining quantity as a function of at least one said retrieved physico-chemical property, and - a step (135) of providing the computed at least one fragrance ingredient post- wash deposition remaining quantity.

Description

[0001] METHOD AND DEVICE FOR PROVIDING AT LEAST ONE FRAGRANCE INGREDIENT POST-WASH DEPOSITION REMAINING QUANTITY

[0002] TECHNICAL FIELD OF THE INVENTION

[0003] The present invention relates to a computer-implemented method for providing at least one fragrance ingredient post-wash deposition remaining quantity and a corresponding computer program product, computer-readable storage medium and device.

[0004] The present invention is applicable to the domain of fragrance design, for example in cosmetics, skincare, skin cleansing, hair care or fabric care products.

[0005] BACKGROUND OF THE INVENTION

[0006] In the field of fragrance design and manufacturing, one of the challenges is that there exist significant discrepancies between the perception of a fragrance taken in isolation under controlled conditions and the perception of a fragrance in real-life conditions.

[0007] Such a perception is affected by the application of the fragrance composition (fine perfumery, hair care, body care, and fabric care among others). Such applications may relate to very different operational environments: for example, fine perfumery, deodorants and body cream relate to “leave-on” applications while skin cleansing, hair care and fabric care products relate to “wash-off” applications in which water is used to remove most of the product on the skin, fabric or hair. For the latter applications, knowing the remaining quantity of fragrance on the skin, fabric or hair after the wash- off is a critical performance parameter. For example, a detergent might have a distinct fragrance in theory, but in practice exhibits an altered version of this fragrance after the wash. Such an alteration results from a variety of factors, among which the fact that only a fraction of the fragrance is actually deposited upon the intended surface (hair, skin or fabric for example).

[0008] However, in current systems, the knowledge of whether a fragrance deposits properly or in sufficient quantities is determined empirically, through expert-intensive trial and error analysis. This leads to considerable increases in fragrance design time and waste of raw ingredients. Furthermore, in current systems, it is almost impossible to know how the perception of a particular fragrance deposited upon a surface will evolve over time. This leads to unsatisfactory products.

[0009] SUMMARY OF THE INVENTION

[0010] The present invention is intended to remedy all or part of these disadvantages.

[0011] To this effect, according to a first aspect, the present invention aims at a computer-implemented method for providing at least one fragrance ingredient postwash deposition remaining quantity, relative to at least one fragrance ingredient digital identifier, representing a materializable fragrance ingredient, which comprises:

[0012] - a step of defining a fragrance composition digital identifier, representing a materializable fragrance composition, comprising:

[0013] - a step of adding at least one fragrance ingredient digital identifier and

[0014] - a step of inputting at least one fragrance base digital identifier, representing a materializable fragrance base,

[0015] - a step of selecting a deposition surface type digital identifier, representing a material deposition surface type,

[0016] - a step of retrieving, from a database, at least one physico-chemical property associated with the defined fragrance composition digital identifier as a function of the selected deposition surface type identifier,

[0017] - a step of computing at least one fragrance ingredient post-wash deposition remaining quantity as a function of at least one said retrieved physico-chemical property, and

[0018] - a step of providing the computed at least one fragrance ingredient post-wash deposition remaining quantity.

[0019] Such provisions allow for the accurate prediction (or representation) of real-life deposition of a fragrance composition and / or ingredient. Such prediction capabilities allow for faster fragrance composition design by perfumers and require less laboratory time to assess the deposition capabilities of a fragrance ingredient.

[0020] In particular embodiments, the deposition surface type digital identifier is representative of:

[0021] - a fabric,

[0022] - hair, or

[0023] - skin. Such embodiments allow for the dynamic evaluation of the impact on deposition of the surface which a fragrance composition or ingredient is in contact with.

[0024] In particular embodiments, at least one physico-chemical property retrieved corresponds to the logP value, to the Hansen parameters and / or to an alphanumerical representation of the chemical structure of at least one added fragrance ingredient digital identifier in the defined fragrance composition digital identifier.

[0025] In particular embodiments, the method object of the present invention further comprises a step of inputting a time from deposition value representative of a duration since composition deposition on a surface, the step of computing being performed as a function of the time from deposition value.

[0026] Such embodiments allow for the accurate evaluation of the impact of duration on the quantity of a fragrance composition or ingredient deposited on a surface.

[0027] In particular embodiments, the method object of the present invention comprises:

[0028] - a step of obtaining a fragrance ingredient,

[0029] - a step of empirically measuring at least one physico-chemical property of the obtained ingredient,

[0030] - a step of storing, in a database, at least one empirically measured physicochemical property in association with at least one ingredient digital identifier, wherein said database is used during the step of retrieving.

[0031] In particular embodiments, the method object of the present invention further comprises a step of calculating at least one gas-phase concentration value for at least one computed deposited quantity of a fragrance ingredient digital identifier.

[0032] In particular embodiments, the method object of the present invention further comprises a step of computing a value representative of a perceived minimum psychophysical intensity for at least one ingredient digital identifier in the defined composition digital identifier as a function of the defined at least one gas-phase concentration value is calculated for at least one computed deposited quantity of a fragrance ingredient digital identifier.

[0033] Such provisions allow for the prediction of the perceivability of a fragrance composition or ingredient on a surface as a function of the deposited quantity of this fragrance composition or ingredient.

[0034] In particular embodiments, the method object of the present invention comprises a step of inputting a distance of perception of at least one ingredient associated with at least one ingredient digital identifier in the defined composition digital identifier, the step of computing a value representative of a perceived minimum psychophysical intensity being executed as a function of the input distance of perception value.

[0035] Such provisions allow for the prediction, for a given distance from the deposition surface, of the perceivability of a fragrance composition or ingredient on a surface as a function of the deposited quantity of this fragrance composition or ingredient.

[0036] In particular embodiments, the method object of the present invention further comprises a step of sending a digital command representative of an instruction of materialising at least one fragrance composition corresponding to at least one fragrance composition digital identifier defined.

[0037] In particular embodiments, the method object of the present invention further comprises a step of materialising at least one fragrance composition corresponding to at least one fragrance composition digital identifier defined.

[0038] According to a second aspect, the present invention aims at a computer program product, characterized in that it comprises instructions which upon execution by a computer cause the computer to execute the method object of the present invention.

[0039] According to a third aspect, the present invention aims at a computer-readable storage medium storing programming instructions which upon execution by a computer cause the computer to execute the method object of the present invention.

[0040] According to a fourth aspect, the present invention aims at a device for providing at least one fragrance ingredient post-wash deposition remaining quantity, relative to at least one fragrance ingredient digital identifier, representing a materializable fragrance ingredient, which comprises a storage medium storing programming instructions and at least one processor configured to, upon execution of the programming instructions, perform the steps of:

[0041] - defining a fragrance composition digital identifier, representing a materializable fragrance composition, comprising:

[0042] - a step of adding at least one fragrance ingredient digital identifier and

[0043] - a step of inputting at least one fragrance base digital identifier, representing a materializable fragrance base,

[0044] - selecting a deposition surface type digital identifier, representing a material deposition surface type, - retrieving, from a database, at least one physico-chemical property associated with the defined fragrance composition digital identifier as a function of the selected deposition surface type identifier,

[0045] - computing at least one fragrance ingredient post-wash deposition remaining quantity as a function of at least one said retrieved physico-chemical property, and

[0046] - providing the computed at least one fragrance ingredient post-wash deposition remaining quantity.

[0047] The second to fifth aspects of the present invention exhibit the same advantages as the related first aspect.

[0048] BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Other advantages, purposes and particular characteristics of the invention shall be apparent from the following non-exhaustive description of at least one particular embodiment of the present invention, in relation to the drawings annexed hereto, in which:

[0050] [Figure 1 ] represents, schematically, a first succession of steps of a particular embodiment of the method subject of the present invention,

[0051] [Figure 2] represents, schematically, a computer system with which an embodiment of the method subject of the present invention can be implemented,

[0052] [Figure 3] represents, schematically, a dose response curve for two sample ingredients, and

[0053] [Figure 4] represents, schematically, a graph linking LogP value of fragrance ingredients to measured deposited quantities in the context of deposition on cotton fabrics.

[0054] DETAILED DESCRIPTION OF THE INVENTION

[0055] This description is not exhaustive, as each feature of one embodiment may be combined with any other feature of any other embodiment in an advantageous manner. Also, various inventive concepts may be embodied as one or more methods, of which an example has been provided. The acts performed as part of the method may be ordered in any suitable way. Accordingly, embodiments may be constructed in which acts are performed in an order different than illustrated, which may include performing some acts simultaneously, even though shown as sequential acts in illustrative embodiments.

[0056] The indefinite articles ‘a’ and ‘an’, as used herein in the specification and in the claims, unless clearly indicated to the contrary, should be understood to mean ‘at least one’.

[0057] The phrase ‘and / or’, as used herein in the specification and in the claims, should be understood to mean ‘either or both’ of the elements so conjoined, i.e. , elements that are conjunctively present in some cases and disjunctively present in other cases. Multiple elements listed with ‘and / or’ should be construed in the same fashion, i.e. ‘one or more’ of the elements so conjoined. Other elements may optionally be present other than the elements specifically identified by the ‘and / or’ clause whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, a reference to ‘A and / or B’, when used in conjunction with open-ended language such as ‘comprising’ can refer, in one embodiment, to A only (optionally including elements other than B); in another embodiment, to B only (optionally including elements other than A); in yet another embodiment, to both A and B (optionally including other elements); etc.

[0058] As used herein in the specification and in the claims, ‘or’ should be understood to have the same meaning as ‘and / or’ as defined above. For example, when separating items in a list, ‘or’ or ‘and / or’ shall be interpreted as being inclusive, i.e., the inclusion of at least one, but also including more than one, of a number or list of elements, and, optionally, additional unlisted items. Only terms clearly indicated to the contrary, such as ‘only one of’ or ‘exactly one of’, or, when used in the claims, ‘consisting of’, will refer to the inclusion of exactly one element of a number or list of elements. In general, the term ‘or’ as used herein shall only be interpreted as indicating exclusive alternatives (i.e. ‘one or the other but not both’) when preceded by terms of exclusivity, such as ‘either,’ ‘one of,’ ‘only one of’, or ‘exactly one of’. ‘Consisting essentially of,’ when used in the claims, shall have its ordinary meaning as used in the field of patent law.

[0059] As used herein in the specification and in the claims, the phrase ‘at least one’, in reference to a list of one or more elements, should be understood to mean at least one element selected from any one or more of the elements in the list of elements, but not necessarily including at least one of each and every element specifically listed within the list of elements and not excluding any combinations of elements in the list of elements. This definition also allows that elements may optionally be present other than the elements specifically identified within the list of elements to which the phrase ‘at least one’ refers, whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, ‘at least one of A and B’ (or, equivalently, ‘at least one of A or B’, or, equivalently ‘at least one of A and / or B’) can refer, in one embodiment, to at least one, optionally including more than one, A, with no B present (and optionally including elements other than B); in another embodiment, to at least one, optionally including more than one, B, with no A present (and optionally including elements other than A); in yet another embodiment, to at least one, optionally including more than one, A, and at least one, optionally including more than one, B (and optionally including other elements); etc.

[0060] In the claims, as well as in the specification above, all transitional phrases such as ‘comprising,’ ‘including,’ ‘carrying,’ ‘having,’ ‘containing,’ ‘involving,’ ‘holding,’ ‘composed of’, and the like are to be understood to be open-ended, i.e., to mean including but not limited to. Only the transitional phrases ‘consisting of’ and ‘consisting essentially of’ shall be closed or semi-closed transitional phrases, respectively.

[0061] It should be noted at this point that the figures are not scaled.

[0062] In the context of this invention, a “fragrance ingredient” designates a volatile ingredient, that is an ingredient presenting a high vapor pressure at ordinary room temperatures. Such an ingredient evaporates at temperatures above a minimal temperature threshold representative of a minimal temperature intended for the use of the compound. For example, if an ingredient is intended to be used in a fragrance that should be perceived in everyday life, that minimal temperature might be 0°C. In this example, at temperatures above 0°C, the ingredient forms a vapor called “gas phase”. Such a chemical ingredient can also be defined by the molecular mass of said ingredient. According to this method of definition, a volatile ingredient is an ingredient presenting a molecular mass below 350 g / mol. Preferably, a volatile ingredient is an ingredient presenting a molecular mass below 325 g / mol. Preferably, a volatile ingredient is an ingredient presenting a molecular mass below 300 g / mol.

[0063] Such a fragrance ingredient can refer to a compound, which is used in a perfuming preparation or a composition to impart a hedonic effect, i.e., used for the primary purpose of conferring or modulating an odor. In other words, such an ingredient, to be considered as being a perfuming one, must be recognized by a person skilled in the art as being able to impart or modify in a positive or pleasant way the odor of a composition, and not just as having an odor. The perfuming ingredient may impart an additional benefit beyond that of modifying or imparting an odor, such as long- lasting, blooming, malodor counteraction, antimicrobial effect, antiviral effect, microbial stability, or pest control.

[0064] The nature and type of the perfuming co-ingredients present in the base do not warrant a more detailed description here, which in any case would not be exhaustive, the skilled person being able to select them on the basis of his general knowledge and according to the intended use or application and the desired organoleptic effect. In general terms, these perfuming ingredients belong to chemical classes as varied as alcohols, lactones, aldehydes, ketones, esters, ethers, acetates, nitriles, terpenoids, nitrogenous or sulfurous heterocyclic compounds and essential oils, and said perfuming ingredients can be of natural or synthetic origin. Perfuming Ingredients are in any case listed in reference texts such as the book by S. Arctander, Perfume and Flavor Chemicals, 1969, Montclair, New Jersey, USA, or its more recent versions, or in other works of a similar nature, as well as in the abundant patent literature in the field of perfumery.

[0065] In the context of this invention, a “fragrance composition” designates an assembly of one or more fragrance ingredients.

[0066] In the context of this invention, a “fragrance base” designates a type of base product in which the fragrance composition is incorporated, such as a shampoo base, a rinse-off hair conditioner base, a shower gel base, a soap base, a powder or liquid detergent base, a liquid or sheet unidose base, a fabric-softener base, a solid or liquid scent-booster base or a cosmetic cream base for example.

[0067] In a general manner, the terms “digital identifier” refers to any bijective digital representation of a physical item, such as an ingredient or a composition. Such a digital identifier may correspond to, for example, an entry in a database. A digital identifier may refer to a label representative of the name, chemical structure or internal reference of an ingredient or a composition, for example.

[0068] In the context of the present description, the term “materialized” of “assembled” is intended as existing outside of the digital environment of the present invention. “Materialized” or “assembled” may mean, for example, readily found in nature or synthesized in a laboratory or chemical plant. In any event, a materialized or assembled UV filter composition digital identifier presents a tangible reality. The terms ‘to be compounded’ or ‘compounding’ refer to the act of materialization of a UV filter composition digital identifier, whether via extraction and assembly of ingredients or via synthetization and assembly of ingredients.

[0069] As used herein, the terms “means of inputting” refer to, for example, a keyboard, mouse and / or touchscreen adapted to interact with a computing system in such a way to collect user input. In variants, the means of inputting are logical in nature, such as a network port of a computing system configured to receive an input command transmitted electronically. Such an input means may be associated to a GUI (Graphic User Interface) shown to a user or an API (Application programming interface). In other variants, the means of inputting may be a sensor configured to measure a specified physical parameter relevant for the intended use case. Examples of means of inputting are disclosed in regard to figure 2.

[0070] As used herein, the terms “computing system”, “computer”, or “computer system” designate any electronic calculation device, whether unitary or distributed, capable of receiving numerical inputs and providing numerical outputs by and to any sort of interface, digital and / or analog. Typically, a computing system designates either a computer executing a software having access to data storage or a client-server architecture wherein the data and / or calculation is performed at the server side while the client side acts as an interface. Examples of such computing systems are disclosed in regard to figure 2.

[0071] As used herein, the term “database” refers to any physical and / or virtual storage of data. Such a database can refer to a computer memory accessible in a computer network, upon which a database management system is run. In simpler embodiments, a database can correspond to a table stored in a computer memory. Such a table may be stored in a document, such as a Microsoft Excel document.

[0072] Figure 1 represents, schematically, a flowchart corresponding to a particular embodiment of a method 100 object of the present invention. This computer- implemented method 100 for providing at least one fragrance ingredient post-wash deposition remaining quantity, relative to at least one fragrance ingredient digital identifier, representing a materializable fragrance ingredient, comprises:

[0073] - a step 105 of defining a fragrance composition digital identifier, representing a materializable fragrance composition, comprising:

[0074] - a step 110 of adding at least one fragrance ingredient digital identifier and - a step 115 of inputting at least one fragrance base digital identifier, representing a materializable fragrance base,

[0075] - a step 120 of selecting a deposition surface type digital identifier, representing a material deposition surface type,

[0076] - a step 125 of retrieving, from a database, at least one physico-chemical property associated with the defined fragrance composition digital identifier as a function of the selected deposition surface type identifier,

[0077] - a step 130 of computing at least one fragrance ingredient post-wash deposition remaining quantity as a function of at least one said retrieved physico-chemical property, and

[0078] - a step 135 of providing the computed at least one fragrance ingredient postwash deposition remaining quantity.

[0079] During the step 105 of defining, means of inputting or input devices 240, such as disclosed in regard to figure 2, may be employed. Such input devices are typically used to interact with a graphic user interface (“GUI”) associated with a computer program configured to receive, process and / or provide information.

[0080] It should be noted that the step 105 of defining may also use a network connector associated with an application programming interface (“API”) allowing interaction with a computer program configured to receive, process and / or provide information.

[0081] During the step 105 of defining, the objective is to obtain values for parameters representative of a fragrance composition which are used during the step 130 of computing, such values being defined by a user (via a GUI) or by a computer program (via an API).

[0082] During this step 105 of defining, a step 110 of adding at least one fragrance ingredient digital identifier is performed.

[0083] During such a step 1 10 of adding a user or computer program selects at least one fragrance ingredient digital identifier to form a fragrance composition digital identifier. Such a selection may correspond, for example, to the selection of at least one graphic element in a list, each element being representative of a fragrance ingredient digital identifier. Another such selection may correspond to the input, in a text field, of an alphanumerical reference which corresponds to the digital representation of a materializable fragrance ingredient. While not disclosed herein, it is obvious that the method 100 object of the present invention may also comprise similar steps of removing at least one fragrance ingredient digital identifier from a fragrance composition digital identifier.

[0084] The step 105 of defining may further comprise a step (not referenced) of setting a value representative of quantity for at least one added fragrance ingredient digital identifier. Such a value may correspond to an absolute value (measured in parts per million, or “ppm”, for example) or a relative value (measured in percentage of parts per million, or “%ppm”, for example).

[0085] The step 105 of defining may further comprise a step (not referenced) of retrieving, from a database, a value representative of a concentration for at least one added fragrance ingredient digital identifier. Said concentration may be used to compute a quantity for a fragrance ingredient in a composition.

[0086] During this step 105 of defining, a step 115 of inputting at least one fragrance base digital identifier is performed.

[0087] During such a step 115 of inputting a user or computer program selects at least one substrate ingredient digital identifier to form a fragrance composition digital identifier. Such a selection may correspond, for example, to the selection of at least one graphic element in a list, each element being representative of a fragrance base digital identifier. Another such selection may correspond to the input, in a text field, of an alphanumerical reference which corresponds to the digital representation of a materializable substrate ingredient.

[0088] While not disclosed herein, it is obvious that the method 100 object of the present invention may also comprise similar steps of removing at least one fragrance base digital identifier from a fragrance composition digital identifier.

[0089] The step 105 of defining may further comprise a step (not referenced) of setting a value representative of quantity for at least one added fragrance base digital identifier. Such a value may correspond to an absolute value (measured in parts per million, or “ppm”, for example) or a relative value (measured in percentage of parts per million, or “%ppm”, for example).

[0090] Such a substrate ingredients may correspond to a base (such as shampoo or rinse-off hair conditioner in the context of hair care, for example).

[0091] In particular embodiments, the step 105 of defining further comprises a step of selecting molecular structure digital identifier associated with at least one fragrance ingredient digital identifier or retrieving said molecular structure digital identifier from a database.

[0092] Such a molecular structure digital identifier corresponds, for example, to a structure as disclosed in the Mordred database such as made available at the URL https: / / mordred-descnptor.github.io / Jndependently of the step 105 of defining (that is, before, in parallel or after), the step 120 of selecting a deposition surface type digital identifier is performed.

[0093] A “deposition surface type digital identifier” refers to a material type of surface which is to come into contact with the fragrance composition. Such a material type of surface is associated to physico-chemical properties which interact with the way a fragrance composition deposits upon said surface. Such a deposition surface type may correspond to, in a non-limitative manner, skin, hair or fabric.

[0094] Fabric materials may correspond with cotton, wool, silk, linen, polyester (PET mainly), nylon (polyamide) and other synthetic fibers and their blends. In the context of this invention, fabric materials may also be considered as different due to their manufacturing process (cotton towel vs. cotton tee-shirt for instance), which can have an influence on perfume deposition.

[0095] For hair, all treatments of the hair such as bleached, dyed, straightened may be independently represented, as such treatments impact the hair surface and therefore hair deposition

[0096] As for skin, for example, oily and dry as well as other skin types may be independently represented as there are significant differences on deposition values which result from such skin types.

[0097] In particular embodiments, a “deposition surface type digital identifier” corresponds to a set of values of physico-chemical properties of said surface type, said set of values interacting with the fragrance composition modelled by the fragrance composition digital identifier defined.

[0098] During such a step 120 of selecting, a user or computer program selects at least one surface type digital identifier. Such a selection may correspond, for example, to the selection of at least one graphic element in a list, each element being representative of a surface type digital identifier. Another such selection may correspond to the input, in a text field, of an alphanumerical reference which corresponds to the digital representation of a physical surface type. After the step 105 of defining has been performed, the method 100 comprises the step 125 of retrieving at least one physico-chemical property from a database, said physico-chemical property being associated with the defined fragrance composition digital identifier and / or at least one fragrance ingredient digital identifier.

[0099] The physico-chemical property depends on the surface type identifier selected. For example, in the context of haircare, the inventors have discovered that computation on the logP (or common logarithm of the octanol-water partition coefficient), boiling point, and Henry’s constant value can provide a deposition quantity for a fragrance ingredient.

[0100] The retrieving operation can be performed in any way known to a person skilled in the art, which depends on the nature, structure and access capabilities of the database.

[0101] The nature of the physico-chemical property for which at least one value is retrieved for at least one fragrance ingredient digital identifier and / or fragrance composition digital identifier may correspond to, for example, the logP (or common logarithm of the octanol-water partition coefficient), boiling point, and Henry’s constant value associated with a fragrance ingredient digital identifier.

[0102] During the step 130 of computing, at least one equation is solved, said equation linking a fragrance ingredient post-wash deposition remaining quantity to the retrieved at least one physico-chemical property.

[0103] Such an equation may be solved by a computer program executed by a computing device.

[0104] Such an equation may be selected as a function of the selected deposition surface type digital identifier.

[0105] For example, in the context of skin care, shower gel or soap, such an equation may be a correspond to a function of the form (for an ingredient):

[0106] Where:

[0107] - k is a constant,

[0108] - fi, f2 and a are parameters of a principal fit function, and

[0109] - fs, f4 and b are parameters of a secondary fit function which complements the principal fit function. For example, in the context of hair care, such an equation may be a correspond to a function of the form (for an ingredient):

[0110] % deposition on hair = A + B x logP + C x logP2+ Dx logP3

[0111] Where A, B, C and D are positive or negative values obtained from fitting empirical measurements of percentage of an ingredient on a normalized hair sample or hair equivalent sample.

[0112] For example, in the context of cotton fabric care and powder or liquid detergent, such an equation may be a correspond to a function of the form (for an ingredient):

[0113] Where:

[0114] - Dmax corresponds to the maximum deposition value,

[0115] - LogPmax corresponds to the LogP of the maximum deposition value, and

[0116] - C corresponds to the curve dispersion according to a Gaussian model.

[0117] To obtain such an equation, the following steps may be performed:

[0118] - empirically measure at least one physico-chemical property for at least one materialized fragrance ingredient or fragrance composition,

[0119] - put said at least one materialized fragrance ingredient or fragrance composition in contact with a surface type,

[0120] - empirically measure the deposited content of said at least one materialized fragrance ingredient or fragrance composition on said surface type,

[0121] - execute a step of optimizing at least one fit function parameter in order to link a the empirically measured fragrance ingredient post-wash deposition remaining quantity to the empirically measured said at least one materialized fragrance ingredient or fragrance composition, and

[0122] - store, in a database, the optimized fit function parameters and a surface type digital identifier associated with said optimized fit function parameters.

[0123] Such steps of empirical measurement are shown, for example, in figures 4 and 5 which relate, respectively, to deposited quantities on cotton fabrics and on human skin under controlled conditions.

[0124] Once at least one fragrance ingredient or composition deposition quantity is computed, at least one said fragrance ingredient is provided during the step 135 of providing. Such a step 135 of providing may be performed by an output device 235 or by a network connector such as disclosed in regard to figure 2. For example, during this step 135 of providing, a GUI may be implemented to show the computed fragrance ingredient or composition deposition quantity.

[0125] The remaining quantity may be expressed in relative terms, i.e. , as a proportion of the initial quantity or in absolute terms.

[0126] In particular embodiments, the method 100 object of the present invention further comprises a step 140 of inputting a time from deposition value representative of a duration since composition deposition on a surface, the step 130 of computing being performed as a function of the time from deposition value.

[0127] In such embodiments, the input time from deposition can be multiplied by an evaporation rate (which can be measured empirically for each fragrance ingredient) to determine a remaining deposited quantity on the deposition surface.

[0128] In particular embodiments, the method 100 object of the present invention further comprises:

[0129] - a step 145 of obtaining a fragrance ingredient,

[0130] - a step 150 of empirically measuring at least one physico-chemical property of the assembled ingredient,

[0131] - a step 155 of storing, in a database, at least one empirically measured physicochemical property in association with at least one ingredient digital identifier, wherein said database is used during the step of retrieving.

[0132] The step 145 of obtaining may be performed in any manner known to a person skilled in the art of fragrance ingredient materialization. Such an assembly may correspond to an extraction of the ingredient or to the chemical synthesis of said ingredient for example.

[0133] The step 150 of empirically measuring may be performed in any manner known to a person skilled in the art of fragrance ingredient characterization. Such a step 150 of measuring may require particular sensors or tools to measure a determined physicochemical property of an ingredient, which are widely known and not disclosed herein.

[0134] The step 155 of storing may be performed by a user via a GUI or by a computer program via an API. During the step 155 of storing, an entry may be created or modified in a database, said entry associating, with a fragrance ingredient digital identifier corresponding to a materialized fragrance ingredient, a value of the measured physicochemical property. In particular embodiments, the method object of the present invention comprises a step 180 of calculating at least one gas-phase concentration value for at least one computed deposited quantity of a fragrance ingredient digital identifier.

[0135] During this step 180 of calculating, a computer program may apply an evaporation rate value to the computed deposited quantity of fragrance ingredient or composition digital identifier, for a determined time since deposition.

[0136] Such an evaporation rate may be set by a user or determined via computational fluid dynamics calculations, which can be linked to specific operation parameters (such as airflow velocity, deposition surface characteristics or temperature for example).

[0137] Said evaporation rate can be obtained by the empirical measurement of evaporation rate of fragrance ingredient and the constitution of a database of evaporation rates associated with the related fragrance ingredient digital identifiers, for example.

[0138] Such an evaporation rate may link the liquid phase and the gas phase concentrations of an ingredient when the liquid phase is deposited on a determined surface.

[0139] Such computational fluid dynamics calculation makes use, for example, of Menter’s Shear Stress Transport turbulence model. To keep the simulation tractable, computation is preferably performed on a stationary mesh, such that the air is preferably moving at the average speed of interest (for example, the average walking speed of 1 .4 m / s) and in the direction toward the front of the deposition surface (for example, in the direction aligned with the vector outward-normal to the back of the deposition surface) while the deposition surface is kept stationary. First, air flow velocity distribution in space, also known as the air flow velocity vector field, is calculated in three dimensions around the human deposition surface from the aforementioned turbulence model. Then, fragrance transport in the air is simulated in three dimensions accounting for convection (utilizing pre-calculated air flow velocity vector field in three dimensions) and diffusion (including turbulent diffusivity) for a plurality of pre-determined fragrance application surface areas and placements on the deposition surface, chosen to represent realistic consumer habits of fragrance wear.

[0140] In particular embodiments, the method 100 object of the present invention comprises a step 160 of computing a value representative of a perceived minimum psychophysical intensity for at least one ingredient digital identifier in the defined composition digital identifier as a function of the defined at least one gas-phase concentration value is calculated for at least one computed deposited quantity of a fragrance ingredient digital identifier.

[0141] The step 160 of computing may be performed by a computer program executed by a computing device.

[0142] During this step 160 of computing, the calculated gas phase concentration is input into a mathematical function linking psychophysical intensity to gas phase concentration. Such a function is usually known as a “dose response curve”, and an example of such a function is shown in figure 3.

[0143] Figure 3 shows the perceived psychophysical intensity 340 of a fragrant ingredient as a function of the gas phase concentration 335 of said ingredient. In the case of figure 3, the dose response curves represented correspond to both alpha damascene 315 and delta damascene 320.

[0144] The lowest gas phase concentration at which the ingredient is perceived is called the Odor Detection Threshold, 305 and 310. In the Odor Value performance measurement paradigm, the Odor Value is determined by the difference between the maximum gas phase concentration at equilibrium conditions and the minimum gas phase concentration allowing human olfactory detection of the compound.

[0145] For example, delta damascene has a higher Odor Value than alpha damascene, which implies that delta damascene is a higher-performing ingredient and has a larger dilution range (references 325 and 330) than alpha damascene, based on the criterion of odor detection. However, at higher intensities, the dose-response curves of the two ingredients cross over twice, with alpha damascene maintaining a higher performance compared to delta damascene. If a different target intensity 345 criterion is chosen as the basis for the ingredient performance metric, instead of the odor detection threshold, superior performance of alpha damascene over delta damascene in the practical range of perceived intensities can be quantitatively captured.

[0146] In the prior art, such as disclosed in WO 2006 / 138726, the relationship between perceived psychophysical intensity and gas phase concentration for an ingredient is considered to be linear. Such a consideration brings the inventors to the use of a linear regression to establish this relationship. However, such a relationship has been found by the inventors of the present invention to be inferior in terms of accuracy.

[0147] Other models could make use of the content of the disclosure Method for Predicting Odor Intensity of Perfumery Raw Materials Using Dose-Response Curve Database - KAO CORP - Hideki Wakayama, Mitsuyoshi Sakasai, Keiichi Yoshikawa, and Michiaki Inoue, Ind. Eng. Chem. Res., 58, 15036-15044, 2019. Such a disclosure provides dose-response curve for 314 perfumery raw materials.

[0148] The dose response curve for fragrance ingredients, in the form of characteristic parameters, may be stored in a database which may be accessed during the step 160 of computing a value representative of a perceived minimum psychophysical intensity / In particular embodiments, the method 100 object of the present invention comprises a step 165 of inputting a distance of perception of at least one ingredient associated with at least one ingredient digital identifier in the defined composition digital identifier, the step 160 of computing a value representative of a perceived minimum psychophysical intensity being executed as a function of the input distance of perception value.

[0149] Such embodiments allow for the accurate prediction of the perceived intensity for a given distance of the deposition surface.

[0150] Such embodiments may use computational fluid dynamics calculations, as disclosed above, to determine the gas phase concentration at a distance from the deposition surface.

[0151] In particular embodiments, the method 100 object of the present invention further comprises a step 170 of sending a digital command representative of an instruction of materialising at least one fragrance composition corresponding to at least one fragrance composition digital identifier defined.

[0152] Such a step 170 of sending may be performed by a user, via a GUI, or by a computer program, via an API. Such an instruction may be addressed to a fragrance composition or ingredient materialization site, such as a laboratory for example.

[0153] In particular embodiments, the method 100 object of the present invention further comprises a step 175 of materialising at least one fragrance composition corresponding to at least one fragrance composition digital identifier defined.

[0154] The nature of such a step 175 of materializing depends on the nature of the fragrance ingredients in the composition and are known to persons skilled in the art of fragrance ingredient materialization and fragrance composition assembly.

[0155] As it can be understood, such an invention also aims at a computer program product, characterized in that it comprises instructions which upon execution by a computer cause the computer to execute a method object of the present invention. As it can be understood, such an invention also aims at a computer-readable storage medium storing programming instructions which upon execution by a computer cause the computer to execute a method object of the present invention.

[0156] Using a hair deposition equation, the ingredient deposition quantities on hair of the perfumers’ palette can be computed.

[0157] In the tables below, the deposition obtained by computation, based on logP of the ingredients, is compared to the analytical measurement obtained for different ingredients via Shampoo & Rinse-off conditioner:

[0158] Shampoo:

[0159] Rinse-off conditioner:

[0160] Shower-gel deposition model example:

[0161] Using the skin deposition model, the deposition levels of ingredients from the perfumers’ palette can be estimated.

[0162] In the tables below, the computed deposition values - based on the ingredients’ log P - are compared with the analytical measurements obtained for various ingredients in shower gel application.

[0163] Figure 2 shows a particular embodiment of the device 200 (or computer system 200) object of the present invention. This device 200 for providing at least one fragrance ingredient post-wash deposition remaining quantity, relative to at least one fragrance ingredient digital identifier, representing a materializable fragrance ingredient, which comprises a storage medium 225 storing programming instructions and at least one processor 210 configured to, upon execution of the programming instructions, perform the steps of:

[0164] - defining a fragrance composition digital identifier, representing a materializable fragrance composition, comprising:

[0165] - a step of adding at least one fragrance ingredient digital identifier and

[0166] - a step of inputting at least one fragrance base digital identifier, representing a materializable fragrance base,

[0167] - selecting a deposition surface type digital identifier, representing a material deposition surface type,

[0168] - retrieving, from a database, at least one physico-chemical property associated with the defined fragrance composition digital identifier as a function of the selected deposition surface type identifier, - computing at least one fragrance ingredient post-wash deposition remaining quantity as a function of at least one said retrieved physico-chemical property, and

[0169] - providing the computed at least one fragrance ingredient post-wash deposition remaining quantity.

[0170] Figure 2 further represents a block diagram that illustrates an example computer system 200 with which an embodiment of the present invention may be implemented. In the example of figure 8, a computer system 205 and instructions for implementing the disclosed technologies in hardware, software, or a combination of hardware and software, are represented schematically, for example as boxes and circles, at the same level of detail that is commonly used by persons of ordinary skill in the art to which this disclosure pertains for communicating about computer architecture and computer systems implementations.

[0171] The computer system 205 includes an input / output (IO) subsystem 220 which may include a bus and / or other communication mechanism(s) for communicating information and / or instructions between the components of the computer system 205 over electronic signal paths. The I / O subsystem 220 may include an I / O controller, a memory controller and at least one I / O port. The electronic signal paths are represented schematically in the drawings, for example as lines, unidirectional arrows, or bidirectional arrows.

[0172] At least one hardware processor 210 is coupled to the I / O subsystem 220 for processing information and instructions. Hardware processor 210 may include, for example, a general-purpose microprocessor or microcontroller and / or a specialpurpose microprocessor such as an embedded system or a graphics processing unit (GPU) or a digital signal processor or ARM processor. Processor 210 may comprise an integrated arithmetic logic unit (ALU) or may be coupled to a separate ALU.

[0173] Computer system 205 includes one or more units of memory 225, such as a main memory, which is coupled to I / O subsystem 220 for electronically digitally storing data and instructions to be executed by processor 210. Memory 225 may include volatile memory such as various forms of random-access memory (RAM) or other dynamic storage devices. Memory 225 also may be used for storing temporary variables or other intermediate information during execution of instructions to be executed by processor 210. Such instructions, when stored in non-transitory computer- readable storage media accessible to processor 210, can render computer system 205 into a special-purpose machine that is customized to perform the operations specified in the instructions.

[0174] Computer system 205 further includes non-volatile memory such as read only memory (ROM) 230 or other static storage device coupled to the I / O subsystem 220 for storing information and instructions for processor 210. The ROM 230 may include various forms of programmable ROM (PROM) such as erasable PROM (EPROM) or electrically erasable PROM (EEPROM). A unit of persistent storage 215 may include various forms of non-volatile RAM (NVRAM), such as FLASH memory, or solid-state storage, magnetic disk, or optical disk such as CD-ROM or DVD-ROM and may be coupled to I / O subsystem 220 for storing information and instructions. Storage 215 is an example of a non-transitory computer-readable medium that may be used to store instructions and data which when executed by the processor 210 cause performing computer-implemented methods to execute the techniques herein.

[0175] The instructions in memory 225, ROM 230 or storage 215 may comprise one or more sets of instructions that are organized as modules, methods, objects, functions, routines, or calls. The instructions may be organized as one or more computer programs, operating system services, or application programs including mobile apps. The instructions may comprise an operating system and / or system software; one or more libraries to support multimedia, programming or other functions; data protocol instructions or stacks to implement TCP / IP, HTTP or other communication protocols; file format processing instructions to parse or render files coded using HTML, XML, JPEG, MPEG or PNG; user interface instructions to render or interpret commands for a graphical user interface (GUI), command-line interface or text user interface; application software such as an office suite, Internet access applications, design and manufacturing applications, graphics applications, audio applications, software engineering applications, educational applications, games or miscellaneous applications. The instructions may implement a web server, web application server or web client. The instructions may be organized as a presentation layer, application layer and data storage layer such as a relational database system using structured query language (SQL) or no SQL, an object store, a graph database, a flat file system or other data storage.

[0176] Computer system 205 may be coupled via I / O subsystem 220 to at least one output device 235. In one embodiment, output device 235 is a digital computer display or Human Machine Interface. Examples of a display that may be used in various embodiments include a touchscreen display or a light-emitting diode (LED) display or a liquid crystal display (LCD) or an e-paper display. Computer system 205 may include other type(s) of output devices 235, alternatively or in addition to a display device. Examples of other output devices 235 include printers, ticket printers, plotters, projectors, sound cards or video cards, speakers, buzzers or piezoelectric devices or other audible devices, lamps or LED or LCD indicators, haptic devices, actuators, or servos.

[0177] At least one input device 240 is coupled to I / O subsystem 220 for communicating signals, data, command selections or gestures to processor 210. Examples of input devices 240 include touchscreens, microphones, still and video digital cameras, alphanumeric and other keys, keypads, keyboards, graphics tablets, image scanners, joysticks, clocks, switches, buttons, dials, slides.

[0178] Another type of input device is a control device 245, which may perform cursor control or other automated control functions such as navigation in a graphical interface on a display screen, alternatively or in addition to input functions. Control device 245 may be a touchpad, a mouse, a trackball, or cursor direction keys for communicating direction information and command selections to processor 210 and for controlling cursor movement on display 235. The input device may have at least two degrees of freedom in two axes, a first axis (e.g., x) and a second axis (e.g., y), that allows the device to specify positions in a plane. Another type of input device is a wired, wireless, or optical control device such as a joystick, wand, console, steering wheel, pedal, gearshift mechanism or other type of control device. An input device 240 may include a combination of multiple different input devices, such as a video camera and a depth sensor.

[0179] In another embodiment, computer system 205 may comprise an Internet of things (loT) device in which one or more of the output device 235, input device 240, and control device 245 are omitted. Or, in such an embodiment, the input device 240 may comprise one or more cameras, motion detectors, thermometers, microphones, seismic detectors, other sensors or detectors, measurement devices or encoders and the output device 235 may comprise a special-purpose display such as a single-line LED or LCD display, one or more indicators, a display panel, a meter, a valve, a solenoid, an actuator or a servo.

[0180] Computer system 205 may implement the techniques described herein using customized hard-wired logic, at least one ASIC or FPGA, firmware and / or program instructions or logic which when loaded and used or executed in combination with the computer system causes or programs the computer system to operate as a specialpurpose machine. According to one embodiment, the techniques herein are performed by computer system 205 in response to processor 210 executing at least one sequence of at least one instruction contained in main memory 225. Such instructions may be read into main memory 225 from another storage medium, such as storage 215. Execution of the sequences of instructions contained in main memory 225 causes processor 210 to perform the process steps described herein. In alternative embodiments, hard-wired circuitry may be used in place of or in combination with software instructions.

[0181] The term “storage media” as used herein refers to any non-transitory media that store data and / or instructions that cause a machine to operate in a specific fashion. Such storage media may comprise non-volatile media and / or volatile media. Nonvolatile media includes, for example, optical or magnetic disks, such as storage 215. Volatile media includes dynamic memory, such as memory 225. Common forms of storage media include, for example, a hard disk, solid state drive, flash drive, magnetic data storage medium, any optical or physical data storage medium, memory chip, or the like.

[0182] Storage media is distinct from but may be used in conjunction with transmission media. Transmission media participates in transferring information between storage media. For example, transmission media includes coaxial cables, copper wire and fiber optics, including the wires that comprise a bus of I / O subsystem 220. Transmission media can also take the form of acoustic or light waves, such as those generated during radio-wave and infra-red data communications.

[0183] Various forms of media may be involved in carrying at least one sequence of at least one instruction to processor 210 for execution. For example, the instructions may initially be carried on a magnetic disk or solid-state drive of a remote computer. The remote computer can load the instructions into its dynamic memory and send the instructions over a communication link such as a fiber optic or coaxial cable or telephone line using a modem. A modem or router local to computer system 205 can receive the data on the communication link and convert the data to a format that can be read by computer system 205. For instance, a receiver such as a radio frequency antenna or an infrared detector can receive the data carried in a wireless or optical signal and appropriate circuitry can provide the data to I / O subsystem 220 such as place the data on a bus. I / O subsystem 220 carries the data to memory 225, from which processor 210 retrieves and executes the instructions. The instructions received by memory 225 may optionally be stored on storage 215 either before or after execution by processor 210.

[0184] Computer system 205 also includes a communication interface 260 coupled to bus 220. Communication interface 260 provides a two-way data communication coupling to network link(s) 265 that are directly or indirectly connected to at least one communication network, such as a network 270 or a public or private cloud on the Internet. For example, communication interface 260 may be an Ethernet networking interface, integrated-services digital network (ISDN) card, cable modem, satellite modem, or a modem to provide a data communication connection to a corresponding type of communications line, for example an Ethernet cable or a metal cable of any kind or a fiber-optic line or a telephone line. Network 270 broadly represents a local area network (LAN), wide-area network (WAN), campus network, internetwork, or any combination thereof. Communication interface 260 may comprise a LAN card to provide a data communication connection to a compatible LAN, or a cellular radiotelephone interface that is wired to send or receive cellular data according to cellular radiotelephone wireless networking standards, or a satellite radio interface that is wired to send or receive digital data according to satellite wireless networking standards. In any such implementation, communication interface 260 sends and receives electrical, electromagnetic, or optical signals over signal paths that carry digital data streams representing various types of information.

[0185] Network link 265 typically provides electrical, electromagnetic, or optical data communication directly or through at least one network to other data devices, using, for example, satellite, cellular, Wi-Fi, or BLUETOOTH technology. For example, network link 265 may provide a connection through a network 270 to a host computer 250.

[0186] Furthermore, network link 265 may provide a connection through network 270 or to other computing devices via internetworking devices and / or computers that are operated by an Internet Service Provider (ISP) 275. ISP 275 provides data communication services through a world-wide packet data communication network represented as Internet 280. A server computer 255 may be coupled to Internet 280. Server 255 broadly represents any computer, data center, virtual machine, or virtual computing instance with or without a hypervisor, or computer executing a containerized program system such as DOCKER or KUBERNETES. Server 255 may represent an electronic digital service that is implemented using more than one computer or instance and that is accessed and used by transmitting web services requests, uniform resource locator (URL) strings with parameters in HTTP payloads, API calls, app services calls, or other service calls. Computer system 205 and server 255 may form elements of a distributed computing system that includes other computers, a processing cluster, server farm or other organization of computers that cooperate to perform tasks or execute applications or services. Server 255 may comprise one or more sets of instructions that are organized as modules, methods, objects, functions, routines, or calls. The instructions may be organized as one or more computer programs, operating system services, or application programs including mobile apps. The instructions may comprise an operating system and / or system software; one or more libraries to support multimedia, programming or other functions; data protocol instructions or stacks to implement TCP / IP, HTTP or other communication protocols; file format processing instructions to parse or render files coded using HTML, XML, JPEG, MPEG or PNG; user interface instructions to render or interpret commands for a graphical user interface (GUI), command-line interface or text user interface; application software such as an office suite, Internet access applications, design and manufacturing applications, graphics applications, audio applications, software engineering applications, educational applications, games or miscellaneous applications. Server 255 may comprise a web application server that hosts a presentation layer, application layer and data storage layer such as a relational database system using structured query language (SQL) or no SQL, an object store, a graph database, a flat file system or other data storage.

[0187] Computer system 205 can send messages and receive data and instructions, including program code, through the network(s), network link 265 and communication interface 260. In the Internet example, a server 255 might transmit a requested code for an application program through Internet 280, ISP 275, local network 270 and communication interface 260. The received code may be executed by processor 210 as it is received, and / or stored in storage 215, or other non-volatile storage for later execution.

[0188] The execution of instructions as described in this section may implement a process in the form of an instance of a computer program that is being executed and consisting of program code and its current activity. Depending on the operating system (OS), a process may be made up of multiple threads of execution that execute instructions concurrently. In this context, a computer program is a passive collection of instructions, while a process may be the actual execution of those instructions. Several processes may be associated with the same program; for example, opening up several instances of the same program often means more than one process is being executed.

[0189] Multitasking may be implemented to allow multiple processes to share processor 210. While each processor 210 or core of the processor executes a single task at a time, computer system 205 may be programmed to implement multitasking to allow each processor to switch between tasks that are being executed without having to wait for each task to finish. In an embodiment, switches may be performed when tasks perform input / output operations, when a task indicates that it can be switched, or on hardware interrupts. Time-sharing may be implemented to allow fast response for interactive user applications by rapidly performing context switches to provide the appearance of concurrent execution of multiple processes simultaneously. In an embodiment, for security and reliability, an operating system may prevent direct communication between independent processes, providing strictly mediated and controlled interprocess communication functionality.

Claims

CLAIMS1 . Computer-implemented method (100) for providing at least one fragrance ingredient post-wash deposition remaining quantity, relative to at least one fragrance ingredient digital identifier in a rinse-off product, representing a materializable fragrance ingredient, characterized in that it comprises:- a step (105) of defining a fragrance composition digital identifier, representing a materializable fragrance composition, comprising:- a step (110) of adding at least one fragrance ingredient digital identifier and- a step (115) of inputting at least one fragrance base digital identifier, representing a materializable fragrance base,- a step (120) of selecting a deposition surface type digital identifier, representing a material deposition surface type,- a step (125) of retrieving, from a database, at least one physico-chemical property associated with the defined fragrance composition digital identifier as a function of the selected deposition surface type identifier,- a step (130) of computing at least one fragrance ingredient post-wash deposition remaining quantity as a function of at least one said retrieved physico-chemical property, and- a step (135) of providing the computed at least one fragrance ingredient postwash deposition remaining quantity.

2. Method (100) according to claim 1 , in which the deposition surface type digital identifier is representative of:- a fabric,- hair, or- skin.

3. Method (100) according to any one of claims 1 or 2, wherein at least one physicochemical property retrieved corresponds to the logP value, to the Hansen parameters and / or to an alphanumerical representation of the chemical structure of at least one added fragrance ingredient digital identifier in the defined fragrance composition digital identifier.

284. Method (100) according to any one of claims 1 to 3, which further comprises a step (140) of inputting a time from deposition value representative of a duration since composition deposition on a surface, the step (130) of computing being performed as a function of the time from deposition value.

5. Method (100) according to one of claims 1 to 4, which comprises:- a step (145) of obtaining a fragrance ingredient,- a step (150) of empirically measuring at least one physico-chemical property of the assembled ingredient,- a step (155) of storing, in a database, at least one empirically measured physico-chemical property in association with at least one ingredient digital identifier, wherein said database is used during the step of retrieving.

6. Method (100) according to any one of claims 1 to 5, in which, which comprises a step (180) of calculating at least one gas-phase concentration value for at least one computed deposited quantity of a fragrance ingredient digital identifier.

7. Method (100) according to claim 6, which further comprises a step (160) of computing a value representative of a perceived minimum psychophysical intensity for at least one ingredient digital identifier in the defined composition digital identifier as a function of the defined at least one gas-phase concentration value is calculated for at least one computed deposited quantity of a fragrance ingredient digital identifier.

8. Method (100) according to claim 7, which comprises a step (165) of inputting a distance of perception of at least one ingredient associated with at least one ingredient digital identifier in the defined composition digital identifier, the step (160) of computing a value representative of a perceived minimum psychophysical intensity being executed as a function of the input distance of perception value.

9. Method (100) according to one of claims 1 to 8, which further comprises a step (170) of sending a digital command representative of an instruction of materialising at leastone fragrance composition corresponding to at least one fragrance composition digital identifier defined.

10. Method (100) according to claim 9, which further comprises a step (175) of materialising at least one fragrance composition corresponding to at least one fragrance composition digital identifier defined.

11. Computer program product, characterized in that it comprises instructions which upon execution by a computer cause the computer to execute the method according to any one of claims 1 to 10.

12. Computer-readable storage medium storing programming instructions which upon execution by a computer cause the computer to execute the method according to any one of claims 1 to 10.

13. Device (200) for providing at least one fragrance ingredient post-wash deposition remaining quantity, relative to at least one fragrance ingredient digital identifier, representing a materializable fragrance ingredient, characterized in that it comprises a storage medium (225) storing programming instructions and at least one processor (210) configured to, upon execution of the programming instructions, perform the steps of:- defining a fragrance composition digital identifier, representing a materializable fragrance composition, comprising:- a step of adding at least one fragrance ingredient digital identifier and- a step of inputting at least one fragrance base digital identifier, representing a materializable fragrance base,- selecting a deposition surface type digital identifier, representing a material deposition surface type,- retrieving, from a database, at least one physico-chemical property associated with the defined fragrance composition digital identifier as a function of the selected deposition surface type identifier,- computing at least one fragrance ingredient post-wash deposition remaining quantity as a function of at least one said retrieved physico-chemical property, andproviding the computed at least one fragrance ingredient post-wash deposition remaining quantity.

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