Hair styling method

A hair styling method, comprising:

• (A) increasing the number of intersections of hair fibers to enhance the volume of hair, and
• (B) applying an aerosol hair cosmetic composition capable of forming a film having a film strength, as measured by a film strength evaluation method, of 800 gf/cm2 or greater, wherein said hair cosmetic composition comprises components (C) and (D) at a mass ratio (D)/(C) of from 0.25 to 20:
• (C) at least one copolymer selected from the group consisting of (C1) and (C2):
• (C1) copolymers each composed of:
• (a) from 30 to 80 mass % of a (meth)acrylamide monomer represented by formula (1):
• wherein R1 represents a hydrogen atom or a methyl group, R2 and R3 may be the same or different and each represents a hydrogen atom or an alkyl group having from 4 to 12 carbon atoms, with the proviso that both R2 and R3 do not represent a hydrogen atom,
• (b) from 2 to 50 mass % of a (meth)acrylamide monomer represented by formula (2):
• wherein R1 has the same meaning as defined above, R4 and R5 may be the same or different and each represents a hydrogen atom or an alkyl group having from 1 to 3 carbon atom,
• (c) from 0 to 30 mass % of a (meth)acrylic acid ester monomer or a (meth)acrylamide monomer represented by formula (3):
• wherein R1 has the same meaning as defined above, R6 represents an alkylene group having 2 or 3 carbon atoms, R7 and R8 may be the same or different and each represents a methyl group or an ethyl group, and a represents a number of 0 or 1, and
• (d) from 0 to 40 mass % of a (meth)acrylic acid ester monomer represented by formula (4):
• wherein R1 has the same meaning as defined above, R9 and R10 may be the same or different and each represents an alkylene group having from 2 to 4 carbon atoms, R11 represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, or a phenyl group, and b and c each represents a number from 0 to 50, with the proviso that both b and c do not stand for 0, and
• (C2) copolymers each composed of:
• (a) from 30 to 80 mass % of a (meth)acrylamide monomer represented by formula (5):
• wherein R12 represents a hydrogen atom or a methyl group, R13 and R14 may be the same or different and each represents a hydrogen atom or an alkyl group having from 4 to 12 carbon atoms or R13 and R14 are coupled to each other to form a ring together with a nitrogen atom adjacent thereto,
• (b) from 5 to 45 mass % of a (meth)acrylic acid ester monomer represented by formula (6):
• wherein R12 has the same meaning as defined above and R15 represents an alkyl group having from 1 to 4 carbon atoms,
• (c) from 2 to 30 mass % of a (meth)acrylic acid ester monomer or a (meth)acrylamide monomer represented by formula (7):
• wherein R12 has same the meaning as defined above, R16 represents an alkylene group having 2 or 3 carbon atoms, R17 and R18 may be the same or different and each represents a methyl group or an ethyl group, and a represents a number of 0 or 1, and
• (d) from 0 to 30 mass % of a (meth)acrylic acid ester monomer represented by formula (8):
• wherein R12 has the same meaning as described above, R19 and R20 may be the same or different and each represents an alkylene group having from 2 to 4 carbon atoms, R21 represents a hydrogen atom or a methyl group, and b and c each represents a number from 0 to 50 with the proviso that both b and c do not stand for 0 and
• (D) an anionic film-forming polymer.