Abstract: Compositions including polycarbodiimide and derivatives thereof together with at least one additional active selected from one or more a carboxylic acid compound chosen from fatty acids, their salts, and mixtures thereof, a polycarboxylic acid compound other than one that is chosen from fatty acids, their salts, and mixtures thereof, and a cationic polymer to enhance the quality of the keratinous substrates. The present invention relates to a cosmetic treatment and process for treating keratinous materials, in particular for hair-care and hair-styling, wherein the composition can include the polycarbodiimide and at least one additional active in amounts sufficient to impart hydrophobicity to keratinous substrates, including hair fibers, upon application thereto. The present invention, in particular, relates to a hair treatment composition and process for enhancing durable non-permanent shaping and curling of the hair, retention of shaping under humidity, and resistance to frizz.

Abstract: Treatment compositions including a polycarbodiimide together with a carboxysilicone polymer to enhance the quality of keratinous substrates. Treatment compositions and processes related thereto for treating keratinous substrates, in particular for hair-care, where, according to the process, the polycarbodiimide and carboxysilicone polymer actives may be applied in a treatment that is a single step emulsion or at least two sequential steps. The composition includes 0.5 to 40.0%, by weight, of the composition of a combined amount of the polycarbodiimide and the carboxysilicone polymer in amounts sufficient to impart hydrophobicity to keratinous substrates, including hair fibers, upon application thereto. It is in particular a treatment composition and process for imparting lasting protection and for improving damaged hair by enhancing the hair's hydrophobicity, thereby enhancing retention of curl, making the make hair easier to comb, and improving the feel thereof.

Abstract: Compositions including polycarbodiimide and derivatives thereof together with one of water soluble polyacid and poly carboxylic acid compounds and derivatives thereof to enhance the quality of the keratinous substrates. The present invention relates to a cosmetic treatment and process for treating keratinous materials, in particular for hair-care and hair-styling, where, according to the process, the polycarbodiimide and water soluble polyacid and poly carboxylic acid actives may be applied in a treatment that is a single step emulsion. The composition can include from about 0.2 to about 5.0%, by weight, of the composition of a combined amount of the polycarbodiimide and the polycarboxylic acid in amounts sufficient to impart hydrophobicity to keratinous substrates, including hair fibers, upon application thereto.

Abstract: Treatment compositions including a polycarbodiimide together with a carboxysilicone polymer to enhance the quality of keratinous substrates. Treatment compositions and processes related thereto for treating keratinous substrates, in particular for hair-care, where, according to the process, the polycarbodiimide and carboxysilicone polymer actives may be applied in a treatment that is a single step emulsion or at least two sequential steps. The composition includes 0.1 to 40.0%, by weight, of the composition of a combined amount of the polycarbodiimide and the carboxysilicone polymer in amounts sufficient to impart hydrophobicity to keratinous substrates, including hair fibers, upon application thereto. It is in particular a treatment composition and process for imparting lasting protection and for improving damaged hair by enhancing the hair's hydrophobicity, thereby enhancing retention of curl, making the make hair easier to comb, and improving the feel thereof.

Abstract: Compositions including polycarbodiimide, and derivatives thereof, together with optional colorants, and amino compounds and derivatives thereof to enhance the quality of keratinous substrates are disclosed. The present invention relates to a cosmetic treatment and process for treating the keratinous substrates, in particular for hair coloration and treatment of artificially colored hair, wherein the composition can include the polycarbodiimide and the amino compound in amounts sufficient to impart one or more of improved color deposit, improved color retention and extended color durability.