A method of hair dying is provides that includes applying a polymer based hair dye to hair and emitting light on the applied polymer based hair dye for a duration to cure the polymer based hair dye on the hair. In certain aspects a device is provided that emits polymer curative energy for curing an applied polymer based hair dye that includes a housing, at least polymer curative light source disposed in the housing, and a controller operatively connected to the heat source and the at least one polymer curative light source. In certain embodiments a heat source is disposed in the housing that includes a polymer curative light source.

Provided herein are long lasting hair compositions, color enhancers, and markers for selecting the same.

Provided herein are long lasting hair compositions, color enhancers, and markers for selecting the same.

A treatment of human hair by means of solutions of Glyoxylic acid that, when used in combination with mechanical straightening by means of hair-straightening irons set at a temperature of approximately 200 C.+/30 C., allow for the semi-permanent changing of the shape of hair from curly and/or frizzy to straight for at least six consecutive washings with water and shampoo.

A treatment of human hair by means of solutions of Glyoxylic acid that, when used in combination with mechanical straightening by means of hair-straightening irons set at a temperature of approximately 200 C.+/30 C., allow for the semi-permanent changing of the shape of hair from curly and/or frizzy to straight for at least six consecutive washings with water and shampoo.

The invention relates to a cosmetic process for treating keratin fibers, preferably the hair, comprising at least the steps consisting in: a) applying to said keratin fibers a composition containing at least one substance chosen from fatty substances, non-silicone polymers and surfactants, b) applying a mechanical tension to said keratin fibers, and c) exposing said keratin fibers under mechanical tension to microwaves, at a pressure ranging from 50 000 to 250 000 Pa, in the presence of at least one solvent in vapor form on contact with the keratin fibers and without there being complete drying of the keratin fibers throughout the entire exposure to the microwaves, the solvent(s) in vapor form being entirely generated by evaporating at least one compound present, before emission of the microwaves, on contact with the keratin fibers, step a) taking place prior to step c).

The invention relates to a cosmetic process for treating keratin fibers, preferably the hair, comprising at least the steps consisting in: a) applying to said keratin fibers a composition containing at least one substance chosen from fatty substances, non-silicone polymers and surfactants, b) applying a mechanical tension to said keratin fibers, and c) exposing said keratin fibers under mechanical tension to microwaves, at a pressure ranging from 50 000 to 250 000 Pa, in the presence of at least one solvent in vapor form on contact with the keratin fibers and without there being complete drying of the keratin fibers throughout the entire exposure to the microwaves, the solvent(s) in vapor form being entirely generated by evaporating at least one compound present, before emission of the microwaves, on contact with the keratin fibers, step a) taking place prior to step c).

Disclosed herein is hair cosmetic composition comprising a thiol-based compound selected from thiolactic acid and its derivatives or salts, and wherein the composition has a pH of less than 7. Also disclosed is a process for shaping or 5 altering the shape of hair or caring of the hair.

Disclosed herein is hair cosmetic composition comprising a thiol-based compound selected from thiolactic acid and its derivatives or salts, and wherein the composition has a pH of less than 7. Also disclosed is a process for shaping or 5 altering the shape of hair or caring of the hair.

Process for treating hair fibres, comprising: (i) combing said fibres, (ii) applying vapour to said fibres, the flow rate of vapour applied being strictly less than 1 g/min, (iii) hair shaping, by heat treatment without vapour, of the hair fibres by conduction and/or by radiation, steps (ii) and (iii) being separate.