To provide a surfactant-free cosmetic, a preparation for the skin and a medicine.
This surfactant-free cosmetic, preparation for the skin and medicine substantially comprise at least one kind of copolymer composed of a cross-linked structure produced from (a1) 1-50 wt.% of a repeating structural unit represented by formula (1) (wherein, n is an integer of 2-9) or (a2) 1-50 wt.% of a mixture of the repeating structural unit represented by formula (1) with a repeating structural unit represented by formula (2) (wherein, R, R1 and R2 may be each mutually the same or different and are each hydrogen atom or a 1-30C linear or branched alkyl or alkenyl group), (b) 49.99-98.99 wt.% of a repeating structural unit represented by formula (3) (wherein, R3 is hydrogen atom, methyl or ethyl; Z is a 1-8C alkylene; n is an integer of 2-9; and X is ammonium, an alkali metal or an alkaline earth metal ion) and (c) 0.01-8 wt.% of a monomer having at least two olefinic double bonds.
MORSCHHAEUSER ROMAN
HORNUNG MICHAEL
Next Patent: USE OF FIBER AS ANTIIRRITANT IN COSMETIC OR DERMATOLOGICAL COMPOSITION