Use of polymers having the critical temperature of the type lcst type or of the ucst, in cosmetic or dermatological formulations and for their preparation and compositions which contain them

摘要

Cosmetic and dermatological compositions for coating keratinic materials comprise an aqueous organic solution containing: (a) at least one non-crosslinked polymer which forms a deposit or film on a keratinic support after drying and has a LCST (Lower Critical Solution Temperature) or UCST (Upper Critical Solution Temperature) critical solution temperature Tc in water between 0 and 100 degrees C, and (b) at least one organic solvent for the polymer that completely dissolves it in the temperature range at which the composition is used. Compositions containing an aqueous solution or dispersion of a non-crosslinked polymer having a Tc as defined, together with a surfactant and/or additional hydrophilic polymer which does not have a Tc within the range indicated , and which establishes a physical interaction (ionic, polar, dipolar, hydrophobic or hydrogen) with the polymer, are also claimed.