Compositions of the invention contain, in a cosmetically acceptable aqueous medium, a) a cationic polyelectrolyte, b) at least one surfactant; and (c) from about 0.01 to about 1.2 weight percent of an anionic polyelectrolyte, where the weight ratio of the anionic polyelectrolyte to the cationic polyelectrolyte is from about 0.05 to about 1.2, and where the composition exhibits a viscosity change that is below a minimum significant-change-threshold (??min) and exhibits no measurable yield stress or increase in yield stress value when compared to a substantially identical composition that does not contain from about 0.01 to about 1.2 weight percent of the anionic polyelectrolyte, at a weight ratio of anionic polyelectrolyte to cationic polyelectrolyte of from about 0.05 to about 1.2.

The present invention relates to a cosmetic composition comprising: a) at least one anionic surfactant chosen from polyoxy alkylenated alkyl(amido)ether carboxy lic acids and salts thereof: b) at least one amphoteric or zwitterionic surfactant: c) at least one associative polymer: and d) at least 2% by weight, relative to the total weight of the composition, of one or more polyols.

Provided is an internal olefin sulfonate composition which is capable of exerting good foamability together with good volume of foam, foaming speed, foam dissipation property, foam quality, foam durability in the presence of sebum, and volume of foam in the presence of sebum at high levels, and a cleansing composition containing the same. The internal olefin sulfonate composition of the present invention comprises (A) an internal olefin sulfonate having 16 carbon atoms and (B) an internal olefin sulfonate having 18 carbon atoms, wherein a mass content ratio (A/B) of component (A) to component (B) is from 75/25 to 90/10, and wherein a mass ratio (hydroxy form/olefin form) of a content of a hydroxy form in the internal olefin sulfonate of the component (A) and the component (B) to a content of an olefin form in the internal olefin sulfonate of the component (A) and the component (B) is from 75/25 to 100/0.

Compositions of the invention contain, in a cosmetically acceptable aqueous medium, a) a cationic polyelectrolyte, b) at least one surfactant; and (c) from about 0.01 to about 1.2 weight percent of an anionic polyelectrolyte, where the weight ratio of the anionic polyelectrolyte to the cationic polyelectrolyte is from about 0.05 to about 1.2, and where the composition exhibits a viscosity change that is below a minimum significant-change-threshold (??min) and exhibits no measurable yield stress or increase in yield stress value when compared to a substantially identical composition that does not contain from about 0.01 to about 1.2 weight percent of the anionic polyelectrolyte, at a weight ratio of anionic polyelectrolyte to cationic polyelectrolyte of from about 0.05 to about 1.2.

Disclosed are compositions for washing, cleansing, and/or conditioning keratinous substrates, comprising, in a physiologically acceptable medium: a) at least one anionic film-forming polymer chosen from polymers and copolymers of acrylic acid, methacrylic acid, and/or mixtures thereof; b) at least one ampholytic polymer having at least one acrylic acid moiety and a cationic charge density ranging from greater than 1 meq/g up to about 3.5 meq/g; and c) at least one surfactant base; wherein the at least one anionic film-forming polymer and the at least one ampholytic polymer form an association; and wherein the pH of the composition ranges from about 5 to about 7. Also disclosed are processes for washing, cleansing, and/or conditioning keratin substrates using the composition, and processes for imparting volume to the hair.

The present invention relates to a composition for dyeing human keratin fibers such as the hair, in mousse form, comprising: (a) at least one oxidation dye precursor; (b) at least one amphoteric or zwitterionic surfactant; (c) at least a second surfactant chosen from nonionic and anionic surfactants, or mixtures thereof; (d) at least one fatty substance; (e) at least one nonionic guar gum. The invention also relates to a process for dyeing human keratin fibers, in which is applied a composition preferably in foam form, obtained by mixing the above mentioned composition, free of oxidizing agent other than atmospheric oxygen, with a composition comprising at least one oxidizing agent other than atmospheric oxygen, and also to a suitable multi-compartment device.

The present invention provides a hair straightening composition with improved ease of use and reduced smoke development during the application of a straightening iron. The composition comprises at least one carboxylic acid of the formula (I) in combination with at least one polymeric thickening agent selected from non-ionic, anionic, cationic and amphoteric polymers having a viscosity of at least 500 mPa-s measured at a polymer concentration of 1% by weight, in water and at 20 C. with a Brookfield viscometer: RCOCOOH Formula (I) In further aspects, the present invention concerns a process for semi-permanent straightening of the hair, utilizing said composition, the use of the composition for straightening hair, and a kit comprising the composition and a straightening iron.

The present invention relates to a composition for cleansing and conditioning keratin fibres, in particular human keratin fibers such as the hair, comprising one or more anionic surfactants, one or more nonionic surfactants in a content of at least 3% by weight relative to the total weight of the composition, one or more amphoteric surfactants in a content of at least 3% by weight relative to the total weight of the composition, one or more particular cationic polymers and one or more amphoteric polymers. The invention also relates to a process for cleansing and conditioning keratin fibres and also to a use involving said composition.

Provided is a cleansing composition for skin or hair capable of bringing about a good rinse feel and durability of foam and, in regard to hair, imparting finger combability during rinsing as well as softness to hair during rinsing and after towel drying, and further, imparting a sufficient moist feeling also to skin after application. A cleansing composition for skin or hair, comprising the following (A) and (B): (A) an internal olefin sulfonate having 12 or more and 24 or less carbon atoms; and (B) a cationic polymer or an amphoteric polymer.

The invention relates to the use of an ampholyte copolymer as a colloidal stabilizer in the preparation of aminoplast core-shell microcapsules containing an active material, wherein the ampholyte copolymer comprises: 2 to 99 mol % of cationic monomer having at least one quaternary ammonium group, 1 to 98 mol % of acrylic based monomer, 0 to 97 mol % of non-ionic monomer,
and wherein the ampholyte copolymer has more cationic charges than anionic charges, wherein the cationic charges of the ampholyte copolymer are exclusively due to the at least one quaternary ammonium group of the cationic monomer.