Disclosed are hair styling compositions comprising at least two latex acrylate polymers, wherein at least one latex acrylate polymer is a film-forming polymer. Methods of styling the hair are also disclosed.

Disclosed are hair styling compositions comprising at least two latex acrylate polymers, wherein at least one latex acrylate polymer is a film-forming polymer. Methods of styling the hair are also disclosed.

The present invention provides a method which achieves a simultaneous coulouring and straightening of the hair in a single step, utilizing a hair treatment composition comprising at least one carboxylic acid of formula (I) defined below and at least one direct dye:
RCOCOOHFormula (I) In another aspect, the invention is directed to the hair treatment composition and the use thereof for straightening and colouring the hair.

The present invention provides a method which achieves a simultaneous coulouring and straightening of the hair in a single step, utilizing a hair treatment composition comprising at least one carboxylic acid of formula (I) defined below and at least one direct dye:
RCOCOOHFormula (I) In another aspect, the invention is directed to the hair treatment composition and the use thereof for straightening and colouring the hair.

A process for treating keratin fibres may include applying a hair treatment composition to the keratin fibres. The composition may comprise at least one of fatty substances, surfactants, polymers with a glass transition temperature (Tg) ranging from about 40 C. to about 150 C., oxidation dye precursors, and direct dyes. The process may also include inserting the keratin fibres into a device comprising two elements that are moveable relative to each other between an open position and a closed position. In the closed position, the two elements may define a substantially leaktight closed space. The process may further include moving the two elements into the closed position to confine the keratin fibres in the closed space, and heating the keratin fibres to a temperature ranging from about 40 C. to about 250 C. while the keratin fibres are confined in the closed space.

A process for treating keratin fibres may include applying a hair treatment composition to the keratin fibres. The composition may comprise at least one of fatty substances, surfactants, polymers with a glass transition temperature (Tg) ranging from about 40 C. to about 150 C., oxidation dye precursors, and direct dyes. The process may also include inserting the keratin fibres into a device comprising two elements that are moveable relative to each other between an open position and a closed position. In the closed position, the two elements may define a substantially leaktight closed space. The process may further include moving the two elements into the closed position to confine the keratin fibres in the closed space, and heating the keratin fibres to a temperature ranging from about 40 C. to about 250 C. while the keratin fibres are confined in the closed space.

Disclosed are hair styling compositions comprising at least two latex polymers chosen from acrylate and polyurethane polymers, wherein at least one latex polymer is a film-forming polymer. Methods of styling the hair are also disclosed.

Disclosed are hair styling compositions comprising at least two latex polymers chosen from acrylate and polyurethane polymers, wherein at least one latex polymer is a film-forming polymer. Methods of styling the hair are also disclosed.

The present invention a process for straightening the hair, using a composition comprising at least one carboxylic acid of the formula (I): RCOCOOH Formula (I) The process of the invention is characterized in that it involves the treating of the hair with the composition and the drying of the treated hair under conditions of mechanical tension and hot air flow having a temperature of 60-140 C.

The present invention a process for straightening the hair, using a composition comprising at least one carboxylic acid of the formula (I): RCOCOOH Formula (I) The process of the invention is characterized in that it involves the treating of the hair with the composition and the drying of the treated hair under conditions of mechanical tension and hot air flow having a temperature of 60-140 C.