| 摘要 |
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: R—CO—COOH 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. |
| 主权项 |
1. Hair straightening composition having a pH of 4 or less and comprising:
at least one carboxylic acid of the formula (I) and/or a hydrate thereof and/or a salt thereof, at a total concentration in the range of 0.1 to 40% by weight, based on the weight of the total composition:
R—CO—COOH Formula (I) wherein R is selected from hydrogen, COOH, CN, optionally substituted C1-C10 alkyl, optionally substituted C2-C10 alkenyl, optionally substituted C2-C10 alkynyl, optionally substituted C3-C10 cycloalkyl, optionally substituted C6-C10 aryl or a 5-10-membered, optionally substituted heteroaryl group, wherein the optional substituents of the alkyl group are selected from halogen, hydroxyl, amino and C1-C4 alkoxy, and the optional substituents of the other groups are selected from halogen, hydroxyl, amino, C1-C4 alkyl and C1-C4 alkoxy; and 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. |
