Abstract: The present invention relates to an anti-wrinkle composition containing a dispersion of a polymer system comprising at least one polymer of natural origin, and to the use of this polymer system as a tensioning agent in a cosmetic or dermatological composition. The polymer used must characteristically have a molecular weight of greater than 670,000 daltons and the polymer system obtained must be capable of forming a steam-permeable film, it must have a Young's modulus ranging from 108 to 9×109 N/m2 and it must produce, at a concentration of 7%, a greater than 1.5% retraction of isolated stratum corneum at 30° C. and at a relative humidity of 40%. The composition obtained is used in particular for the immediate treatment of wrinkles and fine lines on the skin.

Abstract: The present invention relates to an anti-wrinkle composition containing a dispersion of a polymer system comprising at least one polymer of natural origin, and to the use of this polymer system as a tensioning agent in a cosmetic or dermatological composition. In particular, a soybean protein commercial product Profam 972.The polymer used must characteristically have a molecular weight of greater than 670,000 daltons and the polymer system obtained must be capable of forming a steam-permeable film, it must have a Young's modulus ranging from 10.sup.8 to 9.times.10.sup.9 N/m.sup.2 and it must produce, at a concentration of 7%, a greater than 1.5% retraction of isolated stratum corneum at 30.degree. C. and at a relative humidity of 40%.The composition obtained is used in particular for the immediate treatment of wrinkles and fine lines on the skin.