Cosmetic or dermatological composition containing at least one fluorosilicone with an alkyl chain

A stable cosmetic or dermatological composition, containing as film forming agent at least one fluoroalkylsilicone selected from the group consisting of fluoroalkylsilicone of formula (I):

• in which:
• R1 and R′1 independently represent a linear or branched alkyl radical having from 1 to 6 carbon atoms or a phenyl radical,
• R2 represents R1, —OH or —(CH2)f—RF, f being an integer ranging from 0 to 10,
• R3 represents a linear or branched alkyl radical having from 6 to 22 carbon atoms,
• RF represents a radical of formula —(CF2)q—CF3, q being an integer ranging from 0 to 15,
• m and n represent an integer ranging from 1 to 50, and
• p represents an integer ranging from 0 to 2000, and fluoroalkylsilicone of formula (II):
• in which:
• R4 represents a linear or branched alkyl radical having from 1 to 6 carbon atoms, or a phenyl radical,
• R3 represents a linear or branched alkyl radical having from 6 to 22 carbon atoms,
• R′F represents a radical of formula —(CF2)s—CF3, s being an integer ranging from 0 to 15, and
• t represents an integer ranging from 1 to 2000,
• in a suitable cosmetic or dermatoloigcal carrier.