申请人:Gauché Céline
公开号:US20110189116A1
公开(公告)日:2011-08-04
A method of colouring a material, the method comprising the steps of: a)applying to the material a composition comprising a sulphur-containing nucleophile; and b)applying to the material a composition comprising a dye compound selected from a dye class other than the class of reactive dyes.