Devices and methods for styling hair, and in particular, to devices and methods for styling hair using electrolysis are described herein. A method for styling hair includes arranging a section of hair between a first electrode and a second electrode. The section of hair is contacted with an electrolyte before being arranged between the first and second electrodes, after being arranged between the first and second electrodes, and/or concurrently with being arranged between the first and second electrodes. The method further includes causing the first electrode to have a first negative potential, and causing the second electrode to have a second potential, such that the absolute value of the first negative potential is greater than the absolute value of the second potential, and such that the difference in electrical potential between the first electrode and the second electrode creates an electrolysis zone between the first electrode and the second electrode.

Devices and methods for styling hair, and in particular, to devices and methods for styling hair using electrolysis are described herein. A method for styling hair includes arranging a section of hair between a first electrode and a second electrode. The section of hair is contacted with an electrolyte before being arranged between the first and second electrodes, after being arranged between the first and second electrodes, and/or concurrently with being arranged between the first and second electrodes. The method further includes causing the first electrode to have a first negative potential, and causing the second electrode to have a second potential, such that the absolute value of the first negative potential is greater than the absolute value of the second potential, and such that the difference in electrical potential between the first electrode and the second electrode creates an electrolysis zone between the first electrode and the second electrode.

An applicator for applying a product to hair, especially a hair colouring product, including: at least one first row of teeth extending longitudinally over a distance l.sub.1, from a first application face of the applicator; and a plurality of second rows of teeth, extending longitudinally over a distance l.sub.1, from a second application face of the applicator, which is arranged opposite the first application face, the ratio l.sub.1/l.sub.2 being lower than or equal to 0.75.

A method and device for selectively entraining hair strands from the scalp having at least one hooking applicator, the at least one hooking applicator employing a hook that rotates to entrain the hair strands, a hair color container having hair color therein and a way to apply the hair color to the entrained hair stands includes a hooking applicator, hair color container, and trigger mechanism. The trigger mechanism operates to entrain hair using the hooking application and apply hair color to the hair from the hair color container.

A method of repairing oxidatively-treated hair, the methods comprising the sequential steps of: (i) soaking hair in an aqueous treatment composition, (ii) rinsing the hair of step (i); characterised in that the aqueous treatment composition comprises 0.1 to 6 wt % N-acetyl amino acid, based on the total weight of the composition, wherein the N-acetyl amino acid is selected from the group consisting of N-acetyl glycine, N-acetyl alanine, N-acetyl proline, N-acetyl leucine, N-acetyl isoleucine, N-acetyl valine, N-acetyl tyrosine, N-acetyl phenylalanine, N-acetyl tryptophan, N-acetyl serine, N-acetyl glutamine, N-acetyl threonine, N-acetyl asparagine, N-acetyl methionine, N-acetyl lysine, N-acetyl histidine and mixtures thereof, gives damage repair benefits.

A method is described for the treatment and/or prevention of damaged keratin in a keratin-containing tissue, comprising the steps of: applying on the keratin-containing tissue a cosmetic composition comprising molecules carrying at least one light reactive functional group, and at least one photoinitiator; and leaving to process with exposure of the keratin-containing tissue to light, the light being of a wavelength suitable for activating said at least one photoinitiator. A cosmetic composition is also described comprising molecules carrying at least one light reactive functional group and at least one photoinitiator; and its use.

A device for selectively entraining hair strands from the scalp has at least one hooking applicator, the at least one hooking applicator employing a hook that rotates to entrain the hair strands, a hair color container having hair color therein and a way to apply the hair color to the entrained hair stands. The at least one hooking applicator forms a channel between a surface of the hook and a surface of a body portion of the at least one hooking applicator having a hair color outlet therein to better accommodate high viscosity liquid hair color. The hook and/or the at least one hooking applicator includes a recess to hold entrained hair and permit hair color to fill the recess for application. A trigger mechanism first rotates the hook to entrain hair strands and then squeezes the hair color container to apply hair color to the entrained hair.

Hair care product applicators and systems and methods thereof, are described herein. The hair care product applicator can have multiple platforms configured to hold, table, or confine respective portions of a group of strands of hair, where a first platform is configured to hold a first portion of the group of strands of hair, and a second platform, which can be spaced apart from the first platform, is configured to hold a second portion of the group of strands of hair. The second portion of the group of stands of hair can correspond to the entire group of stands of hair, and the first portion of the group of strands of hair can correspond to less than the entire group of strands of hair. An amount of hair care product can be discharged via a discharge opening for application to at least part of the group of stands of hair.

Methods for creating custom hair formulations include generating a first input set and a second input set, formulating a hair formulation recipe, displaying a predicted hair color on the user input device, and dispensing a hair formulation from a dispenser. The first input set is based upon a plurality of present hair state inputs received by a user input device of a hair formulation system. The second input set is based upon a target hair state input received by the user input device. Formulating the hair formulation recipe includes using a processor of the hair formulation system that is operatively connected to the user input device to formulate the hair formulation recipe based upon the first and the second input sets. The predicted hair color is based upon at least one present hair state inputs and the target hair state input.

Methods for creating custom hair formulations include generating a first input set and a second input set, formulating a hair formulation recipe, displaying a predicted hair color on the user input device, and dispensing a hair formulation from a dispenser. The first input set is based upon a plurality of present hair state inputs received by a user input device of a hair formulation system. The second input set is based upon a target hair state input received by the user input device. Formulating the hair formulation recipe includes using a processor of the hair formulation system that is operatively connected to the user input device to formulate the hair formulation recipe based upon the first and the second input sets. The predicted hair color is based upon at least one present hair state inputs and the target hair state input.