| abstract |
The invention relates to the use of compounds derived from 2-pyrrolidone functionalized in position 4 with an ester, carboxylic acid or amide radical, for cosmetically treating keratin materials, especially for conditioning keratin materials, and in particular in terms of the disentangling, straightening, combability and manageability of human keratin fibres such as the hair. The invention also relates to novel cationic monopyrrolidone derivatives and to a cosmetic composition comprising them. Besides the suppleness of the keratin fibre, the compounds of formula (I) as defined previously also make it possible to improve the disentangling, straightening, combability and manageability of the head of hair; the shaping of the head of hair is easier, and the hair has a very pleasant, fluid feel. |