| abstract |
Perfluorinated surface-active block or random oligomers of the formula ##STR1## where R denotes a C 2 -C 18 -hydrocarbon or-hydrofluorocarbon radical, n Y denotes a C 6 -C 13 -fluorocarbon or-hydrofluorocarbon radical which can contain a chain oxygen atom, n Z denotes a group which confers solubility in water and p and q denote integers or decimal numbers from 0.5 to 30 are provided. n They are suitable for use in cosmetic compositions for the treatment of hair. They slow down the flow of sebum and the rate at which hair becomes greasy again. |