Cosmetic heat treatment method using a structuring agent

A nontherapeutic method for applying lipstick, comprising:

• bringing an outer surface of a piece of lipstick composition into contact with or in the vicinity of a heating device so as to heat said piece of lipstick composition locally-to soften essentially only said outer surface and to lower its coefficient of dynamic friction, and
• then applying the outer surface of the lipstick composition thus heated,
• said lipstick composition comprising, in a physiologically acceptable medium:
• at least 4% by weight, relative to the total weight of the lipstick composition, of at least one structuring agent, said structuring agent selected from the group consisting of waxes, organophilic clays, hydrophobic fumed silicas, block copolymers resulting from the polymerization or copolymerization of at least one monomer containing an ethylenic group, and mixtures thereof,
• less than 10% by weight of glossy oil(s), relative to the total weight of the lipstick composition, said oil(s) being hydrocarbon-based oil(s) and/or silicone oil(s) with a molecular mass of greater than 400 g/mol;
• and
• less than 20% by weight of fluid oil relative to the total weight of the lipstick composition,
• wherein the heating device comprises batteries or accumulators as a source of electrical power.