Abstract: The aqueous or aqueous/alcoholic cosmetic composition for treating, forming or maintaining a hair style includes from 0.01 to 25 percent by weight of a natural or synthetic hair fixing or thickening polymer and from 0.01 to 2.5 percent by weight of polyamide or silk fibers, each of the polyamide or silk fibers having a length of from 150 to 2000 .mu.m or from 1 to 1100 .mu.m respectively and a diameter of from 8 to 70 .mu.m, so that the polyamide or silk fibers are deposited in the hair when the composition is applied to the hair. In the method of treating, forming or maintaining the hair style the composition is distributed on the hair so that the fibers are deposited in the hair and then the hair is combed, set in the hair style and dried. Other fibers including viscose, polyester, cellulose, flax linen, wool and cotton can be used instead of silk or polyamide in the composition.