Cosmetic products for treating keratin fibers, especially human hair, containing, in a cosmetic carrier, at least one starch compound, at least 0.01% by weight of a (C8 to C20) monocarboxylic acid compound of formula (I),wherein R is a (C7 to C19) alkyl group, Mn+ is a cation of n valency and n is 1, 2 or 3 (especially 2), and at least one blowing agent, wherein the products can be dispensed from an aerosol container without the valve excessively clogging up or being blocked.
