Efter blanding under oxidative betingelser må den maksimumskoncentration, der anvendes på hår, ikke overstige 2,0 % (hvis både 2-Methyl-1-Naphthol og 1-Acetoxy-2-Methylnaphthalen findes i en hårfarveformel, må den højeste koncentration af 2-Methyl-1-Naphthol på hovedet ikke overstige 2,0 %).
After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 2,0 % (When both 2-Methyl-1-Naphthol and 1-Acetoxy-2-Methylnaphthalene are present in a hair dye formulation, the maximum concentration on the head of 2-Methyl-1-Naphthol should not exceed 2,0 %.)