Cleansing method for detecting the degree of rinsing of cleansing preparations

Abstract

The present invention relates to cosmetic cleansing preparations containing orange oil (INCI: Citrus Aurantium Peel Oil).

Description

[0001] Cleaning methods for detecting the rinsing level of cleaning preparations

[0002] The present invention relates to cosmetic cleansing preparations containing orange oil (INCI: Citrus Aurantium Peel Oil).

[0003] A person's outward appearance can be influenced and enhanced through the use of cosmetic products. Regular use of cleansing and care products ensures that people feel attractive, beautiful, and comfortable in their surroundings, and radiate this outwards.

[0004] The cleansing process serves the purpose of loosening and rinsing away dirt such as sweat residue or accumulated skin cells. For this purpose, shower gels and cleansing products typically contain anionic, non-ionic, or amphoteric surfactants. Surfactants enable, among other things, the dissolution of organic, particularly nonpolar, substances in water. Since, in addition to removing external dirt particles from the skin, they can also dissolve the skin's own particles, leading to dry skin or skin irritation. Therefore, it is important that a shower gel also cares for the skin. This can be achieved by using mild cleansing products and adding agents to replenish the skin's natural oils or moisturize it.

[0005] To prevent unwanted irritation or skin reactions caused by excessive exposure to surfactants, it is essential that excess surfactants, as well as surfactant-impermite particles, are completely rinsed off the skin. Many conventional cleansing products are presented to customers in transparent form, as transparency is associated with cleanliness. However, if a transparent cleansing product is applied to wet skin and not fully lathered, the customer cannot see where residues of the product remain after rinsing. Often, a surfactant film forms, which can subsequently irritate the affected skin. These deposits can occur particularly in skin folds. Therefore, a detection method is needed to verify that the cleansing product has been completely rinsed off.In addition to surfactant residue on the skin, cleaning product residue can also accumulate on the walls and / or floor of a shower cubicle. For aesthetic and hygienic reasons, this residue must be removed. To ensure residue-free cleaning, a method for checking for cleaning product residue on the surface of the shower cubicle is necessary.

[0006] Furthermore, it is important that customers come into contact with the concept of showering and the associated cleansing process at an early age. Children's washing education should convey that the body is thoroughly soaped and then rinsed without leaving any residue. This process should also be taught in a playful way, which leads to a higher success rate for children learning everyday washing routines. For this reason, there is a need for more options to provide cleansing preparations that facilitate playful learning of the showering process.

[0007] Photoluminescence is a phenomenon that makes objects visible even in poor lighting conditions. Photoluminescence is a process in which a substance absorbs light of a specific wavelength and re-emits it at a higher wavelength. In this way, a previously transparent material can be made visible under poor lighting conditions when irradiated with light of a specific wavelength. Therefore, photoluminescence can also be used to detect transparent cleaning agents.

[0008] The photoluminescence of a cleaning preparation can be determined by measuring its gray value. The gray value represents the intensity of the light emitted after irradiation with UV light of wavelengths from 315 nm to 400 nm (UVA). Exposure to light in this wavelength range poses no risk to skin health. The emitted light can be captured by a camera or a suitable sensor. The brightness of the captured signal can then be determined and expressed as a gray value. The gray value of an image is a measure of the brightness of a single pixel. Higher gray values ​​indicate a higher intensity of the emitted light and thus greater photoluminescence.

[0009] Due to the complex composition of cleaning preparations containing anionic surfactants in the form of sulfates, especially sodium lauryl ether sulfate and / or ammonium lauryl ether sulfate, photoluminescence processes can often be suppressed and / or weakened. Therefore, additional cleaning preparations are required that enable detection via photoluminescence.

[0010] Furthermore, for environmental reasons, consumers increasingly prefer cleaning products that do not contain homo- or copolymers of acrylic acid, as their biodegradability is not yet fully understood. These polymers are used as thickening agents in cleaning products, adjusting the desired viscosity of the shower gel by thickening a liquid phase. Therefore, cosmetic cleaning products based on naturally occurring polymers or salts are increasingly being used.

[0011] A primary objective was to overcome the described disadvantages of the prior art. A further objective of the invention was to provide cleaning preparations that enable a detection method for the rinsing process from human skin. A further objective of the present invention was to provide cosmetic cleaning preparations containing anionic surfactants that enable a detection method for the rinsing process from human skin.

[0012] Conventional cosmetic cleansing preparations are known, among others, from EP1647591 A1 or EP2768474 A2. These cleansing preparations typically contain anionic and amphoteric surfactants. However, the disclosed preparations did not provide any indication of the present invention.

[0013] Furthermore, a shower device for tanning in the shower is known to those skilled in the art from EP1534388 B1. The light sources listed therein emit UVB radiation. However, the disclosed apparatus did not provide any indication of the present invention, and there remains a need for shower cabins that promote photoluminescent processes.

[0014] Consequently, a further object of the invention was to provide shower cubicles which, in conjunction with the cleaning preparation according to the invention, enable effective detection of the rinsing process from human skin. Furthermore, it is often not clear, especially for caregivers such as geriatric nurses or nurses, whether a cleaning preparation has already been completely and / or sufficiently rinsed off by a person receiving care during their daily personal hygiene routine.

[0015] Consequently, a further object of the invention was to provide an effective detection method that enables control of the completeness of rinsing a cleaning preparation, as well as determining the degree of rinsing of the cleaning preparation during body cleansing.

[0016] Surprisingly, it has now been found that the disadvantages of the prior art could be remedied by the present invention.

[0017] A first object of the invention is a cleansing method for human skin comprising the following steps: a) moistening the human skin with water; b) applying a cosmetic cleansing product to the human skin comprising a. at least one anionic surfactant; b. at least one amphoteric and / or zwitterionic surfactant; c. at least one non-ionic surfactant; and d. at least one citrus oil; c) rinsing the cleansing preparation from the human skin with water.

[0018] A further object of the invention is a cleansing method for human skin comprising the following steps: a) moistening the human skin with water; b) applying a cosmetic cleansing product to the human skin comprising: a. at least one anionic surfactant; b. at least one amphoteric and / or zwitterionic surfactant; c. at least one nonionic surfactant; and d. at least one substance enabling visual detection of the cleansing preparation on the skin; c) rinsing off the cleansing preparation with water; d) checking the degree of rinsing to ensure complete removal of the cleansing preparation by visual detection of the at least one substance enabling visual detection; e) and, if the cleansing preparation is not completely rinsed off, repeating steps c) and d) until complete rinsing is achieved.

[0019] A further object of the invention is a detection method for detecting cleaning preparations during and / or after a cleaning process on human skin, comprising the following steps: a) moistening the human skin with water; b) applying a cosmetic cleaning product to the human skin comprising a. at least one anionic surfactant; b. at least one amphoteric and / or zwitterionic surfactant; c. at least one nonionic surfactant; and d. at least one substance that enables visual detection of the cleaning preparation on the skin; c) advantageously rinsing off the cleaning preparation with water; and d) detecting the at least one substance that enables visual detection on the human skin.

[0020] Advantageously, the at least one substance enabling visual detection of the cleaning preparation is not a dye. Advantageously, the at least one substance enabling visual detection of the cleaning preparation is characterized in that it enables light-induced visual detection. Advantageously, the at least one substance enabling visual detection of the cleaning preparation is characterized in that it enables black light-induced visual detection. In this context, the term "black light" refers to a specific wavelength range of ultraviolet light with a wavelength between 320 nm and 400 nm, preferably from 340 nm to 385 nm, and particularly preferably from 350 nm to 375 nm.Advantageously, the at least one substance that enables visual detection of the cleaning preparation is characterized in that it enables visual detection induced by irradiation with light of wavelengths from 320 nm to 400 nm, preferably from 340 nm to 385 nm, and particularly preferably from 350 nm to 375 nm. Advantageously, the induced visual detection is an emission of light. Advantageously, the light-induced visual detection is photoluminescence. Advantageously, the induced visual detection is photoluminescence perceptible to the human eye. In this context, the term "photoluminescence perceptible to the human eye" is understood to mean an emission of light that lies within the wavelength range visible to the human eye.

[0021] Surprisingly for those skilled in the art, it has now been found that the emerging problem of detecting cleaning preparations under poor lighting conditions by means of photoluminescence could be solved by the present invention.

[0022] A further advantageous aspect of the present invention is a cosmetic cleaning preparation comprising, based on the total weight of the cleaning preparation, a) at least one anionic surfactant; b) at least one amphoteric and / or zwitterionic surfactant; c) at least one non-ionic surfactant; and d) at least one citrus oil, characterized in that it does not contain any homo- or copolymers of acrylic acid.

[0023] A preferred object of the present invention is a cosmetic cleaning preparation comprising, based on the total weight of the cleaning preparation, a) at least one anionic surfactant; b) at least one amphoteric and / or zwitterionic surfactant; c) at least one non-ionic surfactant; and d) orange oil; characterized in that it does not contain any homo- or copolymers of acrylic acid.

[0024] A further object of the invention is the use of at least one citrus oil in a cosmetic cleaning preparation, advantageously comprising a) at least one anionic surfactant; b) at least one amphoteric and / or zwitterionic surfactant; and c) at least one non-ionic surfactant, for light-induced detection of the cleaning preparation.

[0025] The use according to the above description for light-induced visual detection is particularly advantageous. This use is further characterized in that the light-induced visual detection is induced by irradiation with black light. In this context, "black light" refers to a specific wavelength range of ultraviolet light with a wavelength between 320 nm and 400 nm. The use according to the above description is further characterized in that the light-induced visual detection is induced by irradiation with light of a wavelength from 320 nm to 400 nm, preferably from 340 nm to 385 nm, and particularly preferably from 350 nm to 375 nm. Advantageously, explicit irradiation with light of a wavelength from 100 nm to 320 nm is not required.The use described above is particularly advantageous in that the light-induced visual detection is achieved through the perception of photoluminescence. In this context, the light-induced visual detection is advantageously photoluminescence perceptible to the human eye. Here, "photoluminescence perceptible to the human eye" is understood to mean an emission of light in the wavelength range visible to the human eye.

[0026] A complementary object according to the invention for the cleaning preparation according to the invention is a shower cubicle which has at least one element which is designed in such a way that irradiation with light can take place through it to indicate a visual detection via photoluminescence.Consequently, a further preferred object of the invention is a shower cabin comprising at least one shower area, at least one dispensing valve for dispensing water, at least one regulator which has at least one first variable position in which no water is supplied to the supply valve and at least one second variable position in which water is dispensed from the dispensing valve and at least one drain for discharging the dispensed water, characterized in that the cabin has at least one lighting element which is designed such that this lighting element enables light-induced visual detection via photoluminescence perceptible to the human eye.The illumination element is advantageously characterized in that it emits light for the induction of visual detection with a wavelength of 320 nm to 400 nm, preferably from 340 nm to 385 nm, and particularly preferably from 350 nm to 375 nm. The illumination element is also advantageously characterized in that it emits light for the induction of visual detection exclusively with a wavelength of 320 nm to 400 nm, preferably from 340 nm to 385 nm, and particularly preferably from 350 nm to 375 nm. Furthermore, the illumination element is advantageously characterized in that it does not emit light with a wavelength of 100 nm to 320 nm.

[0027] Surprisingly, the combination of the invention, or rather the cleaning preparation according to the invention, showed a significant increase in photoluminescence upon irradiation with black light. The photoluminescence of the cleaning preparation according to the invention could be determined by measuring its gray value.

[0028] Where photoluminescence values ​​are given in this disclosure, all values ​​refer to a determination of the gray value of a cleaning preparation. The measurement was carried out in a darkened room in which no daylight could penetrate and no other light sources were active during the measurements except for the described UV lamp, thus minimizing interference from unwanted light sources. For the measurements, the respective cleaning preparations were filled into separate screw-top jars and positioned in front of a UV lamp (distance 1 cm). The cleaning preparation was then irradiated with black light (using a UV lamp from Pfeifer und Siebei GmbH, model: "PS UV LED 15 365nm GST15 DV", wavelength 365 nm) and a photograph of each sample was taken simultaneously with a camera. The gray value was determined from the photograph using the ImageJ program.For this purpose, three areas at the same positions in the images (regions of interest of 1264 pixels each) were evaluated for all cleaning preparations, and the average gray value (L-value in the L-RGB composite of an image) was determined for each area. The average gray value of each cleaning preparation was then determined by this triple determination of the L-values ​​across the respective areas.

[0029] Where weight percentages (wt%) are given below without reference to a specific composition or mixture, these percentages always refer to the total weight of the cosmetic cleansing preparation. Where ratios of components / substances / groups of substances are disclosed below, these ratios refer to the weight ratios of the components / substances / groups of substances mentioned.

[0030] The terms “according to the invention”, “advantageous according to the invention”, “advantageous in the sense of the present invention”, etc., always refer within the scope of the present disclosure to the preparation according to the invention, the use according to the invention and the method according to the invention.

[0031] Unless otherwise stated, all tests were conducted under standard conditions. "Standard conditions" means 20°C, 1013 hPa, and a relative humidity of 50%.

[0032] When the term "skin" is used, it preferably refers to human skin. The cosmetic cleansing preparation according to the invention is characterized in that it contains at least one anionic and / or non-ionic surfactant. Anionic surfactants generally have carboxylate, phosphate, sulfate, or sulfonate groups as functional groups. In aqueous solution, they form negatively charged organic ions in acidic or neutral environments.

[0033] Anionic surfactants that can be used advantageously according to the invention are sulfuric acid esters, such as

[0034] - Alkyl ether sulfate, in particular sodium, ammonium, magnesium, MIPA, TIPA lauryl ether sulfate, sodium myristyle ether sulfate and the substance known under the INCI name sodium C12-13 pareth sulfate;

[0035] - Alkyl sulfates, in particular sodium, ammonium and TEA lauryl sulfate; as well as sulfonic acids and salts, such as

[0036] - Acyl isethionates, especially sodium / ammonium cocoyl isethionate;

[0037] - Alkylarylsulfonates;

[0038] - Alkylsulfonates, in particular sodium cocosmonoglyceride sulfate, sodium O12-14 olefin sulfonate, sodium lauryl sulfoacetate and magnesium PEG-3 cocamide sulfate, sulfosuccinates, in particular dioctyl sodium sulfosuccinate, disodium laureth sulfosuccinate, disodium lauryl sulfosuccinate, disodium undecylenamido-MEA sulfosuccinate and PEG-5 lauryl citrate sulfosuccinate;

[0039] Other advantageous anionic surfactants are acylamino acids and their salts, such as

[0040] - Acylglutamates, in particular sodium acylglutamate, di-TEA palmitoylaspartate and sodium caprylic / capric glutamate;

[0041] - Acyl peptides, in particular palmitoyl-hydrolyzed milk protein, sodium cocoyl-hydrolyzed soy protein and sodium / potassium cocoyl-hydrolyzed collagen,

[0042] - Acyl sarcosinates, especially myristoyl sarcosine, TEA-lauroyl sarcosinate, sodium lauroyl sarcosinate and sodium cocoyl sarcosinate;

[0043] - Acyltaurates, especially sodium lauroyltaurate and sodium methylcocoyltaurate;

[0044] - Acyl lactylates, especially lauroyl lactylate, caproyl lactylate;

[0045] - Acylalaninates;

[0046] - Acylglycinates, especially sodium cocoylglycinate.

[0047] Other advantageous anionic surfactants are the following groups of carboxylic acids and carboxylic acid derivatives: carboxylic acids, in particular lauric acid, aluminium stearate, magnesium alkanolate and zinc undecylenate;

[0048] Ester carboxylic acids, for example calcium stearoyl lactylate, laureth-6 citrate and sodium PEG-4 lauramide carboxylate;

[0049] Ether carboxylic acids, for example sodium laureth-13 carboxylate and sodium PEG-6 cocamide carboxylate; as well as phosphoric acid esters and salts, such as DEA oleth-10 phosphate and dilaureth-4 phosphate.

[0050] It is particularly advantageous if the cosmetic cleaning preparation according to the invention contains one or more anionic surfactants according to formula (II)

[0051] RO-(CH2CH2O)x-(CH2-CHR 1 O) y -(CH2CH2O)z-SO3- M + (II) contains, characterized in that

[0052] R is a linear or branched Cs-C alkyl group or mixtures of different linear or branched C8-Ci8 alkyl groups;

[0053] R 1 a methyl, ethyl or mixtures thereof;

[0054] M + a cation selected from the group consisting of alkali metals, NF and HNR 2 3 + is, where R 2selected is from the group consisting of linear or branched alkyl groups, CH2CH2OH and CH2CH(OH)CH3; x is an integer in the range of 0 - 3; y is an integer in the range of 0 - 10; and z is an integer in the range of 0 - 30.

[0055] Particularly preferred surfactants of formula (I) are selected from the group consisting of sodium laureth sulfate and / or ammonium laureth sulfate. If the cosmetic preparation according to the invention contains an anionic surfactant according to formula (I), preferably sodium laureth sulfate and / or ammonium laureth sulfate, it is preferred that the proportion of these anionic surfactants is from 0.5 wt.% to 8.0 wt.%, preferably from 2.0 wt.% to 7.5 wt.%, and particularly preferably from 4.0 wt.% to 7.0 wt.% based on the total weight of the cosmetic preparation. Particularly advantageous are sodium laureth sulfate and / or ammonium laureth sulfate contained in a proportion of 0.5 wt.% to 8.0 wt.%, preferably 2.0 wt.% to 7.5 wt.% and particularly preferably 4.0 wt.% to 7.0 wt.% based on the total weight of the cosmetic preparation.It is particularly advantageous if no other anionic surfactants are included besides sodium laureth sulfate. Embodiments intended to provide particularly effective cleaning performance are advantageously characterized by the inclusion of anionic surfactants and the omission of non-ionic surfactants.

[0056] Furthermore, it is advantageous if at least one non-ionic surfactant is included in the cleaning preparation. Advantageous non-ionic surfactants to use are:

[0057] Fatty acid alkanolamides of general formula (III) where R 3 a linear or branched, saturated or unsaturated alkyl or alkenyl group with 8 to 24 carbon atoms, R 4 each for a hydrogen atom or a - (CH2) n OH group in which n can take the numbers 2 or 3, with the proviso that at least one of the groups R 4a -(CFhjnOH group is, for example, Cocamide MEA / DEA / Ml PA;

[0058] - Addition products of ethylene oxide to fatty acid alkanolamides; Cs-Cso fatty acid mono- and / or diesters of addition products of 1 to 50 mol of ethylene oxide to glycerol;

[0059] - Addition products of 2 to 50 mol of ethylene oxide and / or 0 to 5 mol of propylene oxide to linear or branched fatty alcohols with 8 to 30 carbon atoms, to fatty acids with 8 to 30 carbon atoms, and to alkylphenols with 8 to 15 carbon atoms in the alkyl group; and

[0060] - Alkyl polyglycosides, such as preferably lauryl glycoside, decyl glucoside and coco-glucoside.

[0061] Advantageous embodiments of the invention are characterized in that they contain alkyl glycosides, specifically decyl glucosides and / or coco-glucosides, as nonionic surfactants. If the cosmetic cleansing preparation according to the invention contains alkyl polyglycosides, specifically decyl glucosides and / or coco-glucosides, it is preferred that the proportion of the alkyl polyglycosides is from 0.1 wt.% to 5.0 wt.%, preferably from 0.5 wt.% to 3.0 wt.%, and particularly preferably from 0.7 wt.% to 1.5 wt.%, based on the total weight of the cleansing preparation. Furthermore, the cosmetic cleansing preparation according to the invention contains one or more amphoteric and / or zwitterionic surfactants. Advantageously used amphoteric and / or zwitterionic surfactants are:

[0062] - Acyl- / dialkylethylenediamine, in particular sodium acylamphoacetate, disodium acylamphodipropionate, disodium alkylamphodiacetate, disodium cocoamphodiacetate, sodium cocoamphomonoacetate, sodium acylamphohydroxypropylsulfonate, disodium acylamphodiacetate and sodium acylamphopropionate;

[0063] N-Alkyl amino acids, in particular aminopropylalkylglutamide, alkylaminopropionic acid, sodium alkylimidodipropionate and lauroamphocarboxyglycinate;

[0064] Betaine, in particular Coco Betaine, Cocoamidopropyl Betaine; and Sultaine, in particular Lauryl Hydroxy Sultaine.

[0065] Particularly advantageous are the amphoteric and / or zwitterionic surfactants known under the INCI names Sodium Cocoamphoacetate, Disodium Cocoamphodiacetate, Sodium Cocoamphopropionate, Disodium Cocoamphodipropionate, Coco Betaine, Lauryl Betaine and / or Cocamidopropyl Betaine. From the above group, Cocamidopropyl Betaine is selected as the most preferred amphoteric and / or zwitterionic surfactant.

[0066] Advantageously, the proportion of amphoteric and / or zwitterionic surfactants, in particular the amphoteric and / or zwitterionic surfactants previously listed as particularly advantageous, in the cosmetic cleaning preparation according to the invention is 0.5 to 5.0 wt.%, preferably 1.0 wt.% to 4.5 wt.% and particularly preferably 2.0 wt.% to 4.0 wt.%, based on the total weight of the cleaning preparation.

[0067] Advantageous embodiments of the invention are therefore characterized in that cocamidopropyl betaine is contained in the cosmetic cleansing preparation according to the invention in a proportion of 0.5 to 5.0 wt.%, preferably 1.0 wt.% to 4.5 wt.%, and particularly preferably 2.0 wt.% to 4.0 wt.%, based on the total weight of the cleansing preparation. Within these embodiments, it is further particularly preferred if no other amphoteric and / or zwitterionic surfactants are included besides cocamidopropyl betaine.

[0068] According to the invention, the cleaning preparation comprises one or more citrus oils. The essential oils can be obtained by extraction processes from the peels, seeds, fruits and / or leaves of citrus fruits such as oranges, lemons, grapefruits, bergamots, tangerines and / or limes. Citrus oils that are beneficial to use are orange oil (INCI: Citrus Aurantium Peel Oil), bitter orange oil (INCI: Citrus Aurantium Amara Oil), blood orange oil (INCI: Citrus Sinensis Peel Oil), kaffir lime oil (INCI: Citrus Hystrix Leaf Oil), lemon oil (INCI: Citrus Limon Peel Oil), grapefruit oil (INCI: Citrus Grandis Peel Oil), bergamot oil (INCI: Citrus Aurantium Bergamia Peel Oil), mandarin oil (INCI: Citrus Nobilis Peel Oil), lime oil (INCI: Citrus Aurantifolia Peel Oil), citrus oil (INCI: Citrus Limon Peel Oil), neroli oil (INCI Citrus Aurantium Flower Oil) and / or lemongrass oil (INCI: Cymbopogon Citratus Leaf Oil).From the above group, orange oil is chosen as the preferred citrus oil.

[0069] Advantageously, the proportion of citrus oils, in particular the citrus oils previously listed as particularly advantageous, in the cosmetic cleaning preparation according to the invention is 0.0001 wt.% to 3.0 wt.%, preferably 0.01 wt.% to 2.0 wt.% and particularly preferably 0.1 wt.% to 1.1 wt.%, based on the total weight of the cleaning preparation.

[0070] Advantageous embodiments of the invention are therefore characterized in that the cleaning preparation contains orange oil (INCI: Citrus Aurantium Peel Oil). If orange oil is included, it is advantageous if the proportion of orange oil is from 0.0001 wt.% to 3.0 wt.%, preferably from 0.01 wt.% to 2.0 wt.%, and particularly preferably from 0.1 wt.% to 1.1 wt.% based on the total weight of the preparation.

[0071] It was extremely surprising to those skilled in the art that even the addition of small amounts of orange oil, from 0.0001 wt.%, 0.001 wt.%, 0.01 wt.%, 0.1 wt.% up to 1.0 wt.%, resulted in an increase in the photoluminescence of the cleaning preparation. Advantageous aspects of the invention include orange oil (INCI: Citrus Aurantium Peel Oil) in a total content of 0.0001 wt.% to 3.0 wt.%, preferably from 0.001 wt.% to 1.2 wt.%, and particularly preferably from 0.1 wt.% to 0.4 wt.%, based on the total weight of the preparation. Surprisingly, effects according to the invention were also observed when only small amounts of orange oil (INCI: Citrus Aurantium Peel Oil) were present. One embodiment comprises orange oil (INCI: Citrus Aurantium Peel Oil) in a total content of 0.0001 wt.% to 0.01 wt.%, preferably 0.0002 wt.% to 0.005 wt.%, more preferably 0.0005 wt.% to 0.002 wt.%, and particularly preferably 0.0007 wt.% to 0.001 wt.%.-%, based on the total weight of the preparation.

[0072] Furthermore, the cosmetic cleansing preparations of the invention are preferably characterized in that they do not contain polymers obtained from homo- or copolymerization with acrylic acid and / or methacrylic acid, and do not contain polymers designated as polyquaternium-Z according to the INCI name, where Z is an integer in the range of 1 to 100. In this way, cleansing preparations can be provided that meet ecological requirements.

[0073] In particular, it is advantageous if the homo- or copolymers of acrylic acid and / or methacrylic acid known under the INCI names, polyquaternium-7, are not included.

[0074] Furthermore, it is advantageous if the cosmetic cleaning preparations according to the present invention contain water as a cosmetic carrier, wherein water is advantageously contained in a proportion of 70 wt.% to 92 wt.%, preferably 75 wt.% to 90 wt.% and particularly preferably 80 wt.% to 88 wt.% based on the total weight of the cleaning preparation.

[0075] Furthermore, it is advantageous in the sense of the present invention if the preparation is free of silicone oils.

[0076] The cosmetic cleansing preparations in question can be preserved using preservatives commonly employed in cosmetics. These include, for example, parabens such as methylparaben, propylparaben, ethylparaben, and butylparaben. However, the use of acid-based preservatives commonly used in the food industry is also advantageous. These include, for example, benzoic acid and / or salicylic acid and / or their salts. The inclusion of sodium benzoate is particularly preferred, with the proportion of sodium benzoate preferably being in the range of 0.2 to 0.65 wt.%, more preferably 0.3 to 0.55 wt.%, and most preferably 0.4 to 0.5 wt.% based on the total weight of the preparation.

[0077] Furthermore, it has proven advantageous if the preparation comprises at least citric acid or its salts. If citric acid or its salts are included, it is advantageous if the proportion of these components is 0.2 to 1.0 wt.%, preferably 0.4 to 0.9 wt.%, and particularly preferably 0.5 to 0.8 wt.% based on the total weight of the cleaning preparation.

[0078] According to the invention, the cleaning preparation advantageously comprises sodium chloride. If sodium chloride is included, the proportion of sodium chloride is advantageously in the range of 0.01 to 1.2 wt.%, preferably 0.05 to 1.0 wt.%, and particularly preferably 0.09 to 0.7 wt.% based on the total weight of the preparation.

[0079] The cleaning preparations according to the invention can advantageously contain opacifiers. Opacifiers are water-insoluble, mostly microparticulate substances that are suspended in water and reflect light particularly well, giving the cleaning preparations a milky or cloudy appearance. The opacifiers according to the invention are selected from the group consisting of glycol distearate, glyceryl stearate, PEG-3 distearate, and mixtures thereof.

[0080] If glycol distearate is included, it is advantageous if the total glycol distearate content is from 0.1 wt.% to 1.0 wt.%, preferably from 0.3 wt.% and particularly preferably from 0.5 wt.%, based on the total weight of the preparation.

[0081] Furthermore, the cleaning preparations according to the invention may contain other substances selected from the group consisting of glycerin, propanediol and sorbitol.

[0082] If glycerin is included, it is advantageous if the total glycerin content is 0.01 to 1.0 wt.%, preferably 0.05 to 0.5 wt.% and particularly preferably 0.07 to 0.1 wt.%, based on the total weight of the preparation.

[0083] The cleaning preparation according to the invention is advantageously characterized in that it has a grey value of 210 to 300 under normal conditions, more preferably of 220 to 275 and particularly preferably of 230 to 250.

[0084] The shower cabin according to the invention is a shower cabin which has at least one element which is designed in such a way that it can be irradiated with light to indicate visual detection via photoluminescence.

[0085] The shower enclosure according to the invention is characterized in that it advantageously comprises at least one shower area. The shower area describes the area within the shower enclosure and represents a defined space. The shower area is bounded by a floor, one or more walls, and at least one access point. The shower area can advantageously be square, rectangular, round, triangular, trapezoidal, oval, or combinations of these shapes. The walls of the shower enclosure are advantageously made of a material from the group consisting of glass, plastic, tiles, natural stone, concrete, and / or acrylic. It is advantageous, in accordance with the invention, if the shower area has an area of ​​1 to 10 m². 2 preferably 1.5 to 7 m 2 and in particular preferably 2 to 4 m 2 includes.

[0086] Furthermore, it is advantageous if the shower cabin according to the invention has a regulator (shower mixer) for water volume and water temperature. The shower mixer is advantageously connected to the external water supply for the shower cabin and advantageously consists of a housing which is attached to one of the walls of the shower cabin and advantageously of at least one device for adjusting water temperature and / or water volume. Inside the housing, there are advantageously valves that mix cold and hot water. With the aid of the regulator device, the valves can then be advantageously controlled so that the desired water temperature and water volume from the shower mixer flows into the dispensing valve or the shower head. Advantageously, the at least one regulator has a first variable position in which the dispensing valve or the shower head receives the desired amount of water.No water is supplied to the shower head, and there is at least one second variable position in which water can be dispensed from the outlet valve. The advantageous regulator can be manufactured from various materials from the group consisting of brass, aluminum, copper, stainless steel, acrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC), polypropylene (PP), and / or polyoxymethylene (POM).

[0087] Furthermore, it is advantageous if the shower enclosure according to the invention includes a shower head. The shower head is connected to the shower mixer via a pipe and enables an even distribution of the water. Advantageously, a shower head can dispense the water in different spray patterns. The shower head can advantageously be available in different geometries. In a preferred embodiment, the shower head is fixed to the wall or ceiling of the shower enclosure. In another preferred embodiment, the shower head can be removed from a holder and moved around the room. Advantageously, the shower head consists of at least one material selected from the group consisting of stainless steel, brass, chrome, bronze, acrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC), polypropylene (PP), and / or polyethylene (PE).

[0088] Furthermore, it is advantageous if the shower enclosure according to the invention has a drain. This drain is advantageously located in the floor of the shower enclosure and ensures that used shower water can drain away. In an advantageous embodiment, the drain is closable, so that water can be retained in the shower enclosure. The shower enclosure according to the invention is characterized in that it advantageously has a lighting element that emits black light. The lighting element advantageously consists of a light source, a switching unit, and / or a splash guard, so that no water can penetrate the lighting element. The lighting element can be switched on and off via the switching unit and its intensity can also be regulated. In an advantageous embodiment, the lighting element is permanently attached to the ceiling of the shower enclosure.In a further advantageous embodiment, the lighting element is attached to one of the walls of the shower cubicle. In yet another advantageous embodiment, the lighting element can be detached from the wall and then moved flexibly through the shower cubicle. This flexibility allows all areas of the body and / or the entire shower cubicle to be thoroughly examined, ensuring that no residue of the cleaning solution remains on the body and / or the shower cubicle after rinsing. This is particularly important in elderly and / or nursing care, where caregivers must ensure that no residue of cleaning solution remains on sensitive areas of the skin and could cause irritation. Advantageously, the light source of the lighting element is selected from the group consisting of black light fluorescent tubes, LED lamps, and / or incandescent lamps.Furthermore, it is advantageous if the luminaire emits black light in a wavelength range of 320 nm to 400 nm, preferably from 340 nm to 385 nm, and particularly preferably from 350 nm to 375 nm. It is also advantageous if the emitted light does not include light with wavelengths from 100 nm to 320 nm.

[0089] It was surprisingly discovered that the invention allows for the production of cleaning preparations that are visually detectable by photoluminescence when irradiated with black light. Furthermore, the invention enables the creation of a shower cubicle that makes the transparent shower gel visible to the human eye through photoluminescence during the washing process, thus improving the entire application and rinsing process. In this way, the invention provides a means for cleaning preparations to be detectable during washing, making it possible, for example, in nursing professions to verify complete rinsing. The invention also offers a possibility for washing education for children. Comparative experiments and examples

[0090] The following examples are intended to illustrate the present invention without limiting it. Unless otherwise stated, all quantities, proportions, and percentages are based on the weight and total quantity or total weight of the preparations.

[0091] The following formulations were prepared for the comparative trials.

[0092] Examples 1 to 6 are not in accordance with the invention, while examples 1 to 2 are in accordance with the invention: * Measurement method: see description.

[0093]

[0094] The cleaning preparations listed above were produced and their properties investigated in a comparative test. The gray values ​​were measured as described in the instructions. Cleaning preparations containing orange oil (INCI: Citrus Aurantium Peel Oil) showed a significantly higher gray value when irradiated with black light. In contrast, cleaning preparations without orange oil (INCI: Citrus Aurantium Peel Oil) showed gray values ​​below 200, making detection by photoluminescence difficult.

[0095] The following examples are intended to further illustrate the invention without limiting it:

[0096]

[0097]

[0098]

Claims

Patent claims 1. Cosmetic cleansing preparation comprising, based on the total weight of the preparation, a) at least one anionic surfactant; b) at least one amphoteric and / or zwitterionic surfactant; c) at least one non-ionic surfactant; and d) at least one citrus oil, characterized in that it does not contain any homo- or copolymers of acrylic acid.

2. Cleaning preparation according to claim 1, characterized in that one or more anionic surfactants according to formula (I) RO-(CH2CH2O)x-(CH2-CHR 1 O)y-(CH2CH2O)z-SO3- M + (I) are included, characterized in that R is a linear or branched Cs-Cis alkyl group or mixtures of different linear or branched C8-Ci8 alkyl groups; R 1 a methyl, ethyl or mixtures thereof; M + a cation selected from the group consisting of alkali metals, NH4 + and HNR 2 3+ is, where R 2 selected is from the group consisting of linear or branched alkyl groups, CH2CH2OH and CH2CH(OH)CH3; x is an integer in the range of 0 - 3; y is an integer in the range of 0 - 10; and z is an integer in the range of 0 - 30.

3. Cleaning preparation according to one of the preceding claims, characterized in that it contains sodium laureth sulfate and / or ammonium laureth sulfate, wherein it is preferred that the proportion of these anionic surfactants is from 0.5 wt.% to 8.0 wt.%, preferably from 2.0 wt.% to 7.5 wt.%, and particularly preferably from 4.0 wt.% to 7.0 wt.% based on the total weight of the cosmetic preparation.

4. Cleaning preparation according to one of the preceding claims, characterized in that it contains non-ionic surfactants.

5. Cleaning preparation according to one of the preceding claims, characterized in that it contains alkyl polyglycosides, in particular decyl glucosides and / or coco-glucosides, as non-ionic surfactants.

6. Cleaning preparation according to claim 4, characterized in that it contains decyl glucosides and / or coco-glucosides, wherein the proportion of the alkyl polyglycosides is 0.1 wt.% to 5.0 wt.%, preferably 0.5 wt.% to 3.0 wt.%, and particularly preferably 0.7 wt.% to 1.5 wt.%, based on the total weight of the cleaning preparation.

7. Cleaning preparation according to one of the preceding claims, characterized in that it contains one or more amphoteric and / or zwitterionic surfactants.

8. Cleaning preparation according to one of the preceding claims, characterized in that it contains the following as amphoteric and / or zwitterionic surfactants: Sodium Cocoamphoacetate, Disodium Cocoamphodiacetate, Sodium Cocoamphopropionate, Disodium Cocoamphodipropionate, Coco Betaine, Lauryl Betaine and / or Co-camidopropyl Betaine.

9. Cleaning preparation according to one of the preceding claims, characterized in that cocamidopropyl betaine is present in a proportion of 0.5 to 5.0 wt.%, preferably from 1.0 wt.% to 4.5 wt.% and particularly preferably of 2.0 wt.% to 4.0 wt.%, based on the total weight of the cleaning preparation, wherein it is particularly preferred if no other amphoteric and / or zwitterionic surfactants are included besides cocamidopropyl betaine.

10. Cleaning preparation according to one of the preceding claims, characterized in that it contains the following citrus oils: orange oil (INCI: Citrus Aurantium Peel Oil), bitter orange oil (INCI: Citrus Aurantium Amara Oil), blood orange oil (INCI: Citrus Sinensis Peel Oil), kaffir lime oil (INCI: Citrus Hystrix Leaf Oil), lemon oil (INCI: Citrus Limon Peel Oil), grapefruit oil (INCI: Citrus Grandis Peel Oil), bergamot oil (INCI: Citrus Aurantium Bergamia Peel Oil), mandarin oil (INCI: Citrus Nobilis Peel Oil), lime oil (INCI: Citrus Aurantifolia Peel Oil), citrus oil (INCI: Citrus Limon Peel Oil), neroli oil (INCI: Citrus Aurantium Flower Oil) and / or lemongrass oil (INCI: Cymbopogon Citratus Leaf Oil). are.

11. Cleaning preparation according to one of the preceding claims, characterized in that the proportion of orange oil (INCI: Citrus Aurantium Peel Oil) is from 0.0001 wt.% to 3.0 wt.%, preferably 0.01 wt.% to 2.0 wt.% and particularly preferably 0.1 wt.% to 1.1 wt.% based on the total weight of the preparation.

12. Cleaning preparation according to one of the preceding claims, characterized in that it contains sodium chloride, wherein it is advantageous if the proportion of sodium chloride is from 0.01 to 1.2 wt.%, preferably from 0.05 to 1.0 wt.% and particularly preferably from 0.09 to 0.7 wt.% based on the total weight of the preparation.

13. Cleaning preparation according to one of the preceding claims, characterized in that it contains glycol distearate, wherein it is advantageous if the proportion of glycol distearate is 0.1 wt.% to 1.0 wt.%, preferably from 0.3 to 0.8 wt.% and in particular preferably 0.5 to 0.7 wt.% based on the total weight of the preparation.

14. Cleaning preparation according to one of the preceding claims, characterized in that it contains glycerin, wherein it is advantageous if the proportion of glycerin is from 0.01 to 1.0 wt.%, preferably from 0.05 to 0.5 wt.% and particularly preferably from 0.07 to 0.1 wt.% based on the total weight of the preparation.

15. Cleaning preparation according to one of the preceding claims, characterized in that it contains water, citric acid and / or hydrogenated castor oil.

16. Cleaning preparation according to one of the preceding claims, characterized in that it does not contain any homo- or copolymers of acrylic acid and / or methaacrylic acid, in particular polyquaternium-7.

17. A shower enclosure comprising: a) a shower area; b) at least one shower head; c) at least one regulator for water pressure and water temperature; d) at least one drain; and e) at least one lighting element, characterized in that this element emits black light.

18. Shower cubicle according to claim 17, characterized in that the shower area has an area of ​​1 m² 2 up to 10 m 2 preferably 1.5 m 2 up to 7 m 2 and in particular preferably 2 m 2 up to 4 m 2 includes 19. Shower cabin according to one of claims 17 to 18, characterized in that the shower head consists of at least one material from the group consisting of stainless steel, brass, chromium, bronze, acrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC), polypropylene (PP) and / or polyethylene (PE).

20. Shower cubicle according to one of claims 17 to 19, characterized in that the lighting element emits black light.

21. Shower cubicle according to one of claims 17 to 20, characterized in that the lighting element emits black light in the range of 320 nm to 400 nm, preferably from 340 nm to 385 nm and particularly preferably from 350 nm to 375 nm 22. Shower cubicle according to one of claims 17 to 21, characterized in that the lighting element does not emit light in the range of 100 nm to 320 nm.

23. Shower cubicle according to one of claims 17 to 22, characterized in that the lighting element contains a light source from the group consisting of black light fluorescent tubes, LED lamps and / or incandescent lamps.

24. A cleaning method for human skin in a shower cubicle according to claims 17 to 23, comprising the following steps: a) moistening the human skin; b) applying the cosmetic cleaning product according to claims 1 to 16 to the human skin; c) rinsing the human skin with water; d) checking the degree of rinsing to ensure completeness of rinsing off the cleaning preparation by light-induced visual detection; e) And if the cleaning preparation is not completely rinsed off, repeat steps c) and d) until it is completely rinsed off.

25. Cleaning method for human skin according to claim 24, characterized in that the degree of rinsing is checked for completeness of rinsing of the cleaning preparation by light-induced visual detection of a photoluminescence perceptible to the human eye.

26. Cleaning method for human skin according to claims 24 to 25, characterized in that the light-induced visual detection is induced by irradiation with black light.

27. Cleaning method for human skin according to claims 24 to 26, characterized in that the light-induced visual detection is induced by irradiation with light of wavelength from 320 nm to 400 nm, preferably from 340 nm to 385 nm and particularly preferably from 350 nm to 375 nm.

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