Patent ID: 8636812
Filing Date: 2014-01-28
Classification: A61K,A61Q

Abstract:
1. A two-part foam hair dye which comprises a first part comprising an alkali agent, a second part comprising hydrogen peroxide, and a non-aerosol foamer container for discharging a liquid mixture of the first part and the second part in the form of a foam, wherein the first part comprises components (A) to (D), the equivalent ratio of the anion site of the component (A) to the cation site of the component (B) (anion/cation) is more than 1, a mass ratio of the content of the component (C) to the content of the component (D), (C)/(D), is 5 or less, and a viscosity of the liquid mixture at 25° C. is 1 to 300 mPa·s: (A) a carboxylic acid anionic surfactant, (B) a polymer or copolymer having a mole fraction of diallyldimethyl quaternary ammonium salt monomer of 70% or more, (C) 0.5 to 1.5% by mass of an oxidation dye having a meta-dihydroxybenzene structure, and (D) 0.1 to 9% by mass of polypropyleneglycol of a weight-average molecular weight of 200 to 1200.