Cosmetic method using a composition containing siloxane resins and specific non-ionic surfactant

A cosmetic method for making up and/or caring for keratin materials, comprising the applying, to said keratin materials, a composition, in the form of an emulsion, wherein said composition comprises, in a physiologically acceptable medium:

• a) a siloxane resin comprising at least 80 mol % of units:
• (R′3SiO1/2)a (hereinafter “M” units) and
• (ii) (SiO4/2)b (hereinafter “Q” units)
• in which
• R′ independently represents an alkyl group comprising from 1 to 8 carbon atoms, an aryl group, a carbinol group or an amino group,
• with the condition that at least 95 mol % of the R′ groups are alkyl groups,
• a and b are values strictly greater than 0,
• and the ratio a/b is between 0.5 and 1.5;
• and
• b) a propyl silsesquioxane resin comprising at least 80 mol % of (R″SiO3/2) units (hereinafter “T” units) in which R″ independently represents an alkyl group comprising from 1 to 8 carbon atoms, an aryl group, a carbinol group or an amino group, with the condition that at least 80 mol % of the R″ groups are propyl groups;
• the weight ratio between the resins a) and b) being between 1/99 and 99/1,
• the resins a) and b) not being bonded to one another via covalent bonds,
• and the number of M units in the final mixture being strictly less than the number of (T+Q) units;
• and
• c) at least one nonionic silicone surfactant chosen from polydimethyl (or dialkyl) silicones with polyoxyalkylenated (polyoxyethylenated (or PEO) and/or polyoxypropylenated (or PPO)) hydrophilic side and/or end groups comprising C1 to C20 alkyl side groups, polydialkyl silicones comprising polyglycerolated or glycerolated side and/or end groups, and mixtures thereof, optionally in combination with at least one nonionic organic surfactant.