DEVICE AND METHOD FOR SHAPING AND TREATMENT OF KERATINIC FIBERS SUCH AS HAIR

Description

Scope of the invention

[0001] The present invention relates to the field of processing keratin fibers, such as hair, animal hair, or other hair. More particularly, it relates to devices for shaping and keratinizing hair, forming curlers for animal hair or other hair. The invention also relates to a method for shaping and processing hair, animal hair, or other hair. Context of the invention

[0002] Beautiful, healthy hair has always been considered a major asset in terms of attractiveness. For centuries, people have constantly sought to care for it in order to maintain its shine. For just as long, there has also been a continuous effort to improve or modify hair styling techniques. One such technique is perming.

[0003] A perm is a hair curling technique that can last from 3 to 6 months. It can be done on all hair types, including short, long, straight, or curly hair. Perms are even applied to naturally wavy hair that might not otherwise benefit from them.

[0004] To achieve a hair perm, a perming chemical and curlers are typically used, for example to obtain well-defined curls or waves for long periods of time, typically months.

[0005] There are different methods for creating perms.

[0006] The first method is the hot perm. With this technique, the hair is saturated with a sulfite or bisulfite solution. These substances are applied to rollers, which are then heated. Heating, typically to over 80°C, causes an internal change in the hair's keratin. The heat breaks down the keratin by destroying the cystic bonds. The hair is thus deprived of its rigidity and can therefore be styled. Once the hair is styled, the liquid is allowed to cool while the hair is held in place by the roller. During the cooling process, new disulfide bonds form, restoring the hair's rigidity. As a result, the hair straightens in its wavy position. This method is no longer used.

[0007] Around 1942, a new technique was developed for creating low-temperature perms, known as "cold perms." This method uses wooden, plastic, or metal rollers and two types of liquids. One liquid reduces the temperature, and the other neutralizes the liquid.

[0008] In this so-called "cold" method, the process consists of the following steps: The hair is first shampooed, then the curlers are wrapped around the hair, and finally, a perming solution is applied to the hair. The head is then covered with a cap, typically made of plastic. The hair is wrapped loosely to allow the hair to expand under the action of the perming liquid. The liquid is left to work, and the hair is then further saturated to enhance the effect. Once the curl is deemed satisfactory, the hairdresser neutralizes the curls while keeping the hair wrapped around them. The hair is then rinsed and an oxidizing solution is applied.

[0009] In the cold curling method, the curling liquids are typically salts of thioglycolioc acid or thiolactic acid. The neutralizing liquids serve to remove the hydrogen bonds attached to disulfide bonds, to reform these bonds, and to fix the desired hair deformation.

[0010] A third technique is the "warm" perm. It is a compromise between the hot and cold methods. In this case, the lower heat is compensated for by using more active liquids than those used in the "hot" technique. These liquids contain sulfites and thioglycolate. The warm technique does not require neutralization.

[0011] US patent 20150053225A1 describes a hair accessory designed to hold and retain a lock of hair in a decorative and / or functional configuration. When used, the hair wraps around the accessory, forming a roll that at least partially conceals it. DE 20 2006 013972 also describes a device intended to hold at least one lock of hair.

[0012] All the methods used so far present various problems, including the use of multiple rollers around which the hair must be carefully wrapped, as well as the use of chemicals that can damage or deteriorate the appearance of the hair or that do not allow for a perm that lasts long enough. Furthermore, there is a need for a new technique that not only allows for a perm but also improves the hair's properties, such as its elasticity, shine, and hydration.

[0013] The present invention solves this problem by proposing a new type of curler and a new process. Summary of the invention

[0014] For years, much research has been done to find a solution for lasting hair styling, with curlers that provide nourishing products or material for the hair and at the same time make the hairstyle beautiful.

[0015] There is no method that can satisfy both of these requirements. Either the material of the curler has a harmful effect on the hair (plastic, hot iron, metal) or the treatments are too harsh for the hairstyle to be long-lasting.

[0016] The applicant solved this problem by proposing a device made of natural material, at least partially made of hemp, which is defined by claim 1. The limitations of existing processes were resolved by proposing a hair treatment method based on the use of the device or curler of the invention.

[0017] The curler-forming device of the invention is made, at least partially, of hemp. The advantage of using hemp, at least for the surface receiving the hair or other keratin fibers of the curler-forming device of the invention, lies in the fact that, during its use, the curler-forming device and the hair will work together so that the hair absorbs all the benefits of the hemp, whereas existing plastic curlers create a barrier and have harmful effects on the hair.

[0018] In one embodiment, the curler-forming device comprises at least 60%, preferably at least 90%, even more preferably at least 95% hemp, and even more preferably 100%.

[0019] In one embodiment, the curler-forming device has a band that has a length greater than its greatest width, and a thickness less than said width.

[0020] In one embodiment, the curler-forming device has a uniform composition along its entire length.

[0021] According to the invention, the curler-forming device has a case shape comprising at least one distal end having an opening intended to receive, in a folded position of the curler, at least the part of the curler comprising said proximal end.

[0022] In one embodiment the curler-forming device includes at least one closed proximal end.

[0023] The invention is also realized by a process for shaping a strand of hair or other keratin fibers comprising at least the steps of: present the curling device as described above; position a strand of hair or other keratin fibers so that at least a portion of the strand is in contact with at least one surface of said curling device; wet the strand of hair or other keratin fibers; perform twisting movements of the curling device along its length while holding the strand, at least partially, in contact with said at least one surface of said curling device in order to interlace the strand with the curling device taken along its length; laterally squeeze the curling device at a plurality of places in order to hold the strand against at least one surface of the curler; fold the curling device in order to insert into said opening at least the part of the device comprising the proximal end.

[0024] In the case of a setting process by setting, the step of wetting the hair or other keratin fibers is carried out by wetting the hair or other keratin fibers with water before bringing the hair or other keratin fibers into contact with the devices forming curlers.

[0025] In the case of a perming process, the step of wetting the hair or other keratin fibers is primarily a step carried out by wetting the hair or other keratin fibers with chemicals after the placement of the curling devices and before the step of folding the curling device.

[0026] In one embodiment the process includes a drying step at a temperature below 60°C, preferably below 50°C, even more preferably below 45°C, for example around 40°C, and preferably above 30°C (temperature ranges between 30°C and 60°C, preferably between 30°C and 50°C, and even more preferably between 30°C and 45°C).

[0027] In one embodiment, the width of the curling device, before twisting the curling device, and for any section of the strand along the length of the curling device, is 50% wider than the width of the strand, preferably twice as wide as the width of the strand.

[0028] With the curler of the invention, the treated strands of hair or other keratin fibers are more evenly distributed on the curler-forming device and, during the application of the process, form only a single coil. When performing a perm, for example, the process allows for a reduction in chemical products while maintaining a long-lasting perm. The reduction in chemical consumption can be more than 50%, because prior art methods require wrapping the hair (or other keratin fiber) in several overlapping layers, thus requiring more chemicals to treat all the superimposed layers. Brief description of the drawings

[0029] Further details about the invention will become clearer upon reading the following description with reference to the attached figures: There Figure 1illustrates a process using curlers from earlier art; The Figure 2 shows a cross-section of an embodiment of a curler-forming device that is not part of the invention; The Figure 3 shows a three-dimensional view of a preferred embodiment of the curler-forming device, which is not part of the invention; The Figure 4 illustrates the application of a lock of hair to a curler-forming device, which is not part of the invention; The Figure 5 shows a device forming a curler in the folded position; The Figures 6a, 6b, 6c show 3 side views of curler-forming devices that are not part of the invention; The Figure 7 shows various devices forming curlers that are not part of the invention, in a folded position during the execution of a hair setting or perm; The Figure 8 illustrates one of the steps in a permanent wave process according to the invention; The Figure 9illustrates a type of hair lock obtained by the process of the invention; The Figures 10-16 show several possible forms of a curler-forming device that is not part of the invention; The Figure 17 shows a curler-forming device that is not part of the invention and that includes a shaping support; The Figures 18 and 19 illustrate devices forming curlers that are not part of the invention, comprising a plurality of portions made of hemp; The Figure 20 illustrates an embodiment comprising fasteners arranged on at least one surface of the curler-forming device, which is not part of the invention; The Figure 21 illustrates a prototype of a curler-forming device which is not part of the invention; The Figure 22 illustrates in lateral projection an embodiment of the curler-forming device according to the invention, in its position prior to its application; and The figures 23 to 28illustrate the different stages of applying the device that forms a curler of the figure 22 on a strand of hair, which corresponds to the process of shaping and treating hair with this curler-forming device. Description of the invention

[0030] The present invention will be described with respect to particular embodiments and with reference to certain drawings, but the invention is not limited thereto. The drawings described are purely schematic and not limiting. In the drawings, the size of certain elements may be exaggerated and not drawn to scale for illustrative purposes. The dimensions and relative dimensions do not correspond to actual reductions in practice of the invention.

[0031] It should be noted that the term "including" in the description and claims should not be interpreted as being limited to the means listed below, i.e., it does not exclude other elements.

[0032] The reference to "an embodiment" throughout the entire disclosure means that a particular feature, structure, or characteristic described in relation to the embodiment is included in at least one embodiment of the invention. Thus, the expressions "in an embodiment" or "in a variant," which appear in various places in the description, do not necessarily all refer to the same embodiment, but to several. Furthermore, the features, structures, or characteristics may be combined in any appropriate manner, as would be apparent to a person skilled in the art from this disclosure, into one or more embodiments. Similarly, various features of the invention are sometimes grouped into a single embodiment, figure, or description to make the disclosure more readable and to improve the understanding of one or more of the various inventive aspects.Furthermore, if some embodiments described below include certain features found in other embodiments, but not others, combinations of features from different embodiments are deemed to fall within the scope of the invention. For example, all claimed embodiments may be used in any combination. It is also understood that the invention can be implemented without some of the many specific details stated. In other cases, not all structures are presented in detail so as not to obscure the understanding of the description and / or figures.

[0033] In this document the term “curler” is broadly understood as a device, element or set of elements configured for use in hair care, particularly to shape strands of hair and / or improve the visual appearance and / or mechanical properties of hair such as its elasticity or resistance to breakage.

[0034] In a first aspect, the invention is realized by a curler 1 intended to receive at least one strand of hair 200, having at least one hair receiving surface configured to allow the formation, from at least one strand of hair 200, of at least two waves 202-208 having non-collinear winding axes and / or different diameters, the curler 1 comprising a distal end 1a and a proximal end 1b. The strand of hair has a distal end 204 and a proximal part 202, which is located on the side of the base of a person's hair.

[0035] In particular, the hair curler 1 of the invention is made, at least partially, of hemp. This hemp is advantageously the textile fiber extracted from the plant Cannabis sativa of the subspecies sativa.

[0036] In one embodiment, the hair curler comprises at least 60%, or at least 80%, or at least 90% hemp. Preferably, the hair curler is made entirely of hemp.

[0037] In an advantageous variant, curler 1 can also include other materials made from any dye-free textile.

[0038] Preferably, the part of the curler intended to wrap the 200 strands of hair is made entirely of hemp to benefit from all its properties during use. Of course, different types of hemp can be used to make the curler. The entire curler, or at least the hemp portion, is preferably made from a hemp fabric forming a sheet obtained by the regular assembly of hemp threads or fibers, arranged in two series crossed at right angles, or more generally from a fabric, whether it be knit, non-woven, or woven.

[0039] In a preferred embodiment, the curler 1 has a band with a length L greater than its greatest width W, and a thickness E less than said width W. The curler 1 has a longitudinal axis S which may be an axis of symmetry as in the embodiments illustrated in Figures 10, 11, 14, 15 And 22The width of the proximal end 1b can be gradually reduced to end in a point.

[0040] Preferred values ​​for length L are between 5cm and 50cm, preferably between 10cm and 30cm.

[0041] Preferred values ​​for width W are between 3cm and 20cm, preferably between 5cm and 15cm.

[0042] Preferred values ​​for thickness E are between 1mm and 20mm, preferably between 2mm and 5mm.

[0043] In a version described later, the curler 1 can have a case or bag shape, illustrated in Figures 3 , 5 , 21 And 22-28 Also, for example, all the variants illustrated in Figures 10 to 16 can be made in the form of cases or bags.

[0044] In some variations, the curler 1 may comprise two portions which may have different lengths L, widths W, and thicknesses E, or even be made of two different materials. The two portions may form a bag shape of uniform material or may be made from two strips sewn together (such a variation is not illustrated in the Figures).

[0045] The curler 1 may include two solid bands of parallelepiped shape.

[0046] THE Figures 6a, 6b, 6c illustrate 3 different longitudinal sections, i.e. in the YZ plane, of curlers 1 which are not part of the invention.

[0047] Preferably, the curler 1 comprises a plurality of fasteners 10a-10d, 20a-20d. These fasteners are used to create knots 302, 304, 306, 308, 310 during the execution of the process described below. The number of fasteners may be more than 10, possibly more than 20. In one variant, the curler 1 may also not include any fasteners, and during the execution of the process described below, fasteners detached from the curler may be added. In another variant, the curler 1 may also not include any fasteners, and during the execution of the process described below, a fastener is obtained by knotting the proximal portion around itself. The fasteners 10a-10d, 20a-20d may be made from various materials chosen from cotton and hemp.The 10a-10d, 20a-20d fasteners can be elastic bands surrounded by hemp yarn, wool, or any form of natural textile but ideally made of hemp yarn to benefit from all the advantages of hemp.

[0048] In one embodiment, illustrated in Figures 2, 3 , 10 à 15 said plurality of attachments 10a-10d, 20a-20d comprises at least two groups 10, 20 of opposite attachments 10a-10d, 20a-20d (defined in the X direction of the Figures), each arranged at an edge of said curler 1.

[0049] In some variations, the lateral edges of curler 1 should not be smooth and / or linear and may have notches or undulations. For example, in an embodiment illustrated in Figure 16which is not part of the invention, the curler 1 may include projecting parts 4a, 4b, 4c and recesses 4d, 4e, 4f. During the execution of the method described below, the projecting parts 4a, 4b, 4c and the recesses 4d, 4e, 4f may be joined during a folding movement along the axis S, illustrated in the Figures 16 of an angle α. According to another embodiment which is not part of the invention, the salient portions 4a, 4b, 4c may have a different composition than the body of the curler 1.

[0050] According to the invention, the curler 1 comprises at said distal end 1a, means for attaching said distal end 1a with said proximal end 1b.

[0051] In an embodiment not part of the invention, said means consist of two parts of a button system 30, 32, 402, 404, the two parts of which are designed to close, such as a snap fastener. In another embodiment not part of the invention, said means 30, 32 are two strips of textile covered with a different texture, allowing, when brought into contact, a removable connection, for example, Velcro. In other variants not part of the invention, the fastening means may include a metal clip button, a textile button, or any type of fastener known to hold two parts together, for example, a clothing button. For fastening means, such as said button, there is no direct contact with the strand of hair 200 to be treated, and therefore it will be chosen according to the cost of this fastening means, and preferably of very good quality for long-term use. In the embodiment of the figures 22 to 28and according to the invention, the fastening means are two links 34, 36 forming the free ends of a cord placed in a channel 38 forming (or placed near) the edge of the distal end 1a of the curler 1. These links 34, 36 are for example also made of hemp.

[0052] In one embodiment, the curler 1 has a uniform composition over its entire length L.

[0053] The curler 1 can also be composed of several segments 3a, 3b, 5a, 5b, of which at least two segments 3a, 5a have a different composition and / or shape and / or dimension. This is illustrated in Figures 18 and 19 which illustrate segments 3a, 3b made of hemp and joined together by segments 5a, 5b, 5c which are not made of hemp. The segments 5a, 5b, 5c which are not made of hemp may have a different length, width, and thickness than the segments 3a, 3b made of hemp.

[0054] According to the invention, ( Figures 2, 3 , 4, 5 , 8 , 10 à 13 , 16 , 18 à 20 , 21 And 22 à 28 ), the curler 1 has a case shape, also defined as a bag, comprising at least one distal end 1a having an opening 2a intended to receive, in a folded position of the curler 1, at least the part of the curler 1 comprising the proximal end 1b.

[0055] In one embodiment, the curler 1 includes at least one proximal end 1b which is closed, at least partially.

[0056] In a preferred variant, said proximal end 1b has a rounded shape illustrated in the Figures 11, 12 , 16 , 18, 19 , 21 The rounded shape can be any shape described by a polynomial, possibly an arc of a circle. The said closed proximal end 1b can, for example, have the shape of a triangle.

[0057] In an embodiment that is not part of the invention, illustrated in Figure 17 The curler 1 includes a support 400 onto which its hemp part is fitted. Such a support can help to achieve the curler's twist during its use. This support 400 can, for example, be a reinforcing rod for the curler 1 or a support that makes it easier to fold and hold the curler 1 in its folded form as shown in the diagram. Figure 5 The support must be made of a material that does not damage the hair.

[0058] In an embodiment that is not part of the invention illustrated in Figures 14 and 15 , the curler 1 includes at least two branches 1‴, 1 iv< intended to receive each a portion of said lock of hair 200. In an example of an embodiment, at least one of said two branches 1‴, 1 iv< may include an opening 2a intended to fold at least a part of the curler 1.

[0059] In a variant that is not part of the invention, illustrated in Figure 20 The curler 1 may include a fastening system 50 comprising fastening elements 52-58 for holding the strand 200 against the curler. The fastening elements 52-58 may include attachment zones 52a-58c integrated into the body of the curler 1. The fastening elements 52-58 and / or the attachment zones 52a-58c may be made, at least partially, of hemp.

[0060] According to the invention, and as illustrated in Figure 22 , the curler 1 forms a case or bag with its distal end 1a having the two ties 34, 36 which can slide in the channel 38, which allows the border formed by this channel to be tightened and thus reduce the size of the opening 2a of the curler. Method of the invention

[0061] In a second aspect, the invention is realized by a method for shaping a strand of hair 200 comprising at least the steps of:present the curler 1 as described above; position a strand of hair 200 so that at least a portion of the strand 200 is in contact with at least one surface 1' of said curler 1; wet the strand of hair 200; perform twisting movements of the curler 1 in its length L while holding the strand of hair 200, at least partially, in contact with said at least one surface 1' of said curler 1 in order to intertwine the strand 200 with the curler 1 taken in its length L; laterally squeeze the curler 1 at a plurality of places 300a-300e in order to hold the strand of hair 200 against at least one surface 1' of the curler 1; Fold the curler 1 at least partially in the Y direction of its length in order to insert at least part of the proximal end 1b into said opening 2a, which is made possible by this folding movement between the inner and outer faces of the section of the curler 1 comprising the opening 2a and the distal end 1a. figure 5 This illustrates curler 1 in its folded position and shape 41. This movement is similar to that used to turn a sock inside out, between its right and wrong sides.

[0062] In a preferred embodiment of the process, the strand of hair 200 is aligned with the longitudinal axis S of the curler 1.

[0063] In the processes of the earlier art, the strand of hair is wound several times in the same place according to its length, as illustrated in the Figure 1 With the curler 1 of the invention, the strand 200 is wound, during the twisting of the curler 1, only along the curler 1 (i.e., in the Y direction in the Figures) and not in several layers of hair wound around the curlers. This results in a thin layer of hair on the curler 1 in its wound and folded position. The thinness of the strand in contact with the curler 1 allows for better penetration of the substances produced by the hemp.

[0064] In one embodiment the width of the strand arranged in contact with the curler, before twisting the curler, and for any section of the strand along the length L of the curler 1, is equal to at least 80%, preferably at least 90% of the width W of the curler 1.

[0065] In a preferred version, the lock of hair is much narrower than when the curler is laid flat, as illustrated on the Figure 4 If the band of the curler, laid flat before twisting, is much wider than the strand of hair, this allows the hair to be held securely when the curler is tightened, for example, with clips. In preferred designs, the maximum width W of the curler, i.e., before twisting, is at least 50% wider, preferably twice as wide, as the width of a strand of hair (200) that is to be curled and placed on the curler (1).

[0066] In one embodiment, the tightening step is carried out by creating a plurality of knots 302, 304, 306, 308, 310 formed with the lateral fasteners 10a-10d, 20a-20d. A simple knot 301 ( Figures 23-24 ) obtained by forming a loop with the proximal portion of the curler 1, through which the distal end 1a is passed, clamping the strand of hair 200. This first tightening of the curler at the knot 301 to clamp the strand of hair in its proximal portion near the skull, at location 300a, is completed ( Figure 26 ) by other clamping zones obtained by twisting the curler on itself. This gives us clamping zones 300a-300e... 300f.

[0067] In the case of the implementation of Figures 22-28After folding (turning over) the curler 1 into a bag shape, the ties 34 and 36 are pulled, which tightens the opening 2a, and then tied together above the knot 301 which remains inside the folded curler 1. It is thus understood that the two ties 34, 36, placed inside and outside the channel 38 which forms the edge of the opening 2a, are able to tighten the opening 2a by sliding in the channel and also form means for attaching said distal end 1a to said proximal end 1b by making a knot with the ends of the ties, as with shoelaces.

[0068] This folded curler forms a solid bag containing the intermediate section of the curler and most of the length of the 200 strand. This solid bag has a length L1, which is very short compared to the length L of the unfolded curler ( Figures 2, 3 , 22), this reduced length L1 being between approximately 1 to 3 times the greatest width W of the curler in its unfolded form.

[0069] In a preferred embodiment, and more particularly in the case of a setting process, the step of wetting the hair is carried out by wetting the hair with water preferably before bringing the hair into contact with the curlers.

[0070] In one embodiment, before folding the curler 1 as illustrated in Figure 8 or in Figure 26 The curler is impregnated with hair treatment products. This is done, for example, when performing a perm. These treatment products are applied just before folding the curler to protect the treated strand from the air and allow the perming chemical to do its work.

[0071] In one variant, a 500 cap, illustrated in Figure 7It can be placed on all 40 of the curlers 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 in their folded position. Using a cap is recommended for thick hair, as the cap provides additional heat for better chemical penetration.

[0072] In a variant, not illustrated in the Figures, for example when the curlers are not in the shape of a bag, the curlers can be folded and / or rolled and placed in an external bag, preferably made of hemp, during the processing of the strands 200.

[0073] In one variant, the tightening step is done using separate tightening means from the curler 1. These tightening means can be clips, wires or bands and can be made, at least partially, of hemp.

[0074] In one variation, the clamping means can be made with metal wires, such as iron wires, provided that these wires are wrapped with hemp fibers. Preferably, the hair should never come into contact with elements made of metal and / or plastic. The hemp curler according to the invention allows the hair to benefit from and receive only the positive contributions of the hemp in the curler, resulting in beautiful hair.

[0075] The curler 1 of the invention is particularly suited to two types of hair treatment techniques: setting and perming. The use of the curler 1 of the invention is now described in more detail for these two techniques. Hair-setting method using the curler 1 of the invention

[0076] In one embodiment, the process consists of a hair styling process comprising at least one hair heating step.

[0077] In a preferred execution method, the strand of hair to be treated is wetted with water, at least partially, and preferably entirely, before being positioned along the curler.

[0078] When you set your hair by wetting it with water and then drying it, you are affecting the sulfur bonds in the hair. When hair is wet, these sulfur bonds are broken; this is well known.

[0079] In a hair-setting process, hemp rollers are placed in contact with strands of hair dampened with water. The added moisture allows the hemp to transfer all its beneficial properties while drying and taking the shape of the roller.

[0080] Until now this technique has been achieved by using a high-temperature drying helmet to allow the hair to take on a curly / wavy shape.

[0081] To benefit from the properties of hemp, the temperature of the hair roller should not exceed 60 degrees Celsius. It is therefore essential to use, for example, a low-temperature drying hood, typically around 40°C. Low-temperature drying allows the roller to dry gently in contact with the hair, thus transferring all the cosmetic benefits of the hemp components to the hair without overheating it. A processing time of 30-60 minutes is required for the hair to dry completely.

[0082] The difference with known methods is that the material of the curler 1, when dried in the presence of moisture, allows the strand of hair 200 and the hemp curler 1 to bond and impart beneficial substances to the hair. By using hemp as the material for the curler, the strand of hair 200 absorbs all the benefits of hemp, namely: improved elasticity, increased concentration of Omega 3 fatty acids, and increased protein concentration. With the process of the invention, the hair is of better quality with improved volume and shine. Also, by using the curler 1 of the invention, it is possible to better create and control the desired shape of the strand of hair 200.

[0083] It should also be noted that there is no risk of breakage with this type of curler, unlike with other curlers. On the contrary, these newly invented curlers can even repair broken hair by repeating the styling process weekly.

[0084] It should be noted that the curler 1 of invention 1 does not change its shape during the execution of the process steps, even though hemp is a natural material. It is one of the strongest textiles available. Its use as a support for wet hair leads to a surprising result by combining shaping and hair health, a combination that synthetic curlers do not offer at all. Permanent wave method using the curler-forming device 1 of the invention

[0085] In one embodiment, the process consists of a hair perming procedure, comprising at least one chemical treatment step. The hair may be pre-washed and slightly damp.

[0086] The application of chemicals is preferably done on the strand 200 of hair, after the placement of the curler 1 but preferably before folding the curler 1 at least partially in the Y direction of its length.

[0087] The perming process of the invention is similar to a classic perming process but the curler is not harmful to the hair and is very effective in giving the hair the shape of the curler 1.

[0088] Also, when using the curler 1 of the invention in a chemical perming process, it allows for the use of fewer chemicals. Using the hemp curler 1 reduces the consumption of chemicals by 30%, preferably 50%. This is because the flexible shape of the curler allows for better distribution of the strand of hair 200, thus forming a single thin layer of hair, which in turn reduces the amount of chemicals needed. The thickness of a thin layer of hair applied to the curler 1 is typically less than 20%, preferably less than 10%, and even more preferably less than 5% of the maximum width W of the curler. The most important aspect of the process is to make a single wrap of the strand of hair 200 with the curler 1.

[0089] In this case, hemp is less beneficial to the hair than a traditional setting technique. However, using hemp rollers helps to create a barrier and reduce the damaging effects of chemical products on the hair.

[0090] As with traditional curlers, after the perm or setting is done, the curlers 1 are removed and the hairstyle is finished. Experimental result with a prototype

[0091] The following describes the creation of a prototype and its effects during the application of a set and perm.

[0092] In a first step, a curler was made in the shape of an asymmetrical bag with an inclined central section β and a distal part 1a comprising an opening and a closed proximal end 1b. This is illustrated in the Figure 21. 10a-20e fasteners were made from cotton thread and wool was used to sew these fasteners.

[0093] The prototype device was 35cm long. The fasteners ensure that the curler 1 stays securely in place when the hair is applied and wrapped.

[0094] The fasteners used were 10cm long and the tests led to the conclusion that the best length was 12cm.

[0095] It has been determined that the ideal width of the curler for any hair length is 8cm.

[0096] The results showed that the hair became shiny and the curls held very well. In tests performed on a practice head with natural hair, the 202-208 curls created did not lose their shape even after two weeks.

[0097] The hold of the curls made depends of course on daily activity but the hold of the set with the process of the invention is on average 5 days.

[0098] As the curlers 1 release some of the hemp substances onto the hair with each new use, this can lead to a decrease in the properties of each curler 1 over time. It can be estimated that the curlers gradually lose their properties and that it is necessary to renew the curlers regularly, probably after several months, i.e. after several dozen uses.

[0099] The explanations and figures relate to a curler-forming device and the method of shaping and processing a 200-gauge strand of hair, but throughout the text one can replace "curler" with "curler-forming device", "hair" with "keratin fibers, such as human hair, animal hair, or other hairs" and "strand of hair" with "strands of keratin fibers, such as human hair, animal hair, or other hairs".

Claims

1. Device (1) intended to receive at least one strand of hair (200) or other keratin fibres, having at least one strand receiving surface configured to allow the formation, from at least one strand of hair (200) or other keratin fibres, at least two undulations (202-208) having winding axes that are not collinear with each other and / or have different diameters, the device (1) comprising a distal end (1a) and a proximal end (1b), the device (1) being made, at least partially in its strand receiving surface, of hemp, the device having a case shape comprising at least one distal end (1a) with an opening (2a) intended to receive, in a folded position of the device (1), at least the part of the device (1) comprising the proximal end (1b), and the device comprising two straps (34, 36) placed inside and outside a slide (38) forming or close to the edge of the opening (2a), said straps (34, 36) being capable of tightening the opening (2a) by sliding in the slide and further forming means for attaching said distal end (1a) to said proximal end (1b).

2. Device (1) according to claim 1, the device comprising at least 60%, preferably at least 90%, more preferably at least 95% hemp, and even more preferably 100% hemp.

3. Device (1) according to claim 1 or 2, the device having a strip that has a length (L) greater than its greatest width (W), and a thickness (E) smaller than said width (W).

4. Device (1) according to one of claims 1 to 3, the curler device having a uniform composition over its entire length.

5. Device (1) according to one of claims 1 to 4, the proximal end of which is closed.

6. Method for shaping a strand of hair (200) or other keratin fibres, comprising at least the steps of: - providing the device (1) according to one of claims 1 to 5; - positioning a strand of hair (200) or other keratin fibres so that at least a portion of the strand (200) is in contact with at least one surface (1') of said device (1); - wetting the strand (200); - twisting the device (1) along its length (L) while holding the strand (200), at least partially, in contact with said at least one surface (1') of said device (1) in order to intertwine the strand (200) with the device (1) taken along its length (L); - laterally tightening the device (1) at a plurality of locations (300a-300e) in order to hold the strand (200) against at least one surface (1') of the device (1); - folding the device (1) up in order to insert into said opening (2a) at least a part of the device comprising the proximal end (1b).

7. Method according to claim 6, further comprising the following steps: - before performing twisting movements between the strand (200) and the device (1), making a simple knot (301) with the proximal portion of the device and the strand (200) - after folding up the device (1), tightening the straps (34, 36) placed at the opening (2a), and attaching said straps (34, 36) to each other above the knot (301) which remains inside the device (1)8. Method according to claim 6 or 7, comprising a drying step at a temperature below 60°C, preferably below 50°C, and even more preferably below 45°C.

9. Method according to claim 6, 7 or 8, characterised in that the width of the device, before twisting the device (1), and for any section of the strand 200 along the length L of the device (1), is 50% wider than the width of the strand 200, preferably twice as wide as the width of the strand 200.