4-(2,4-Dihydroxyphenylazo)benzensulphonic acid and its sodium salt (Acid Orange 6; CI 14270) when used as substance in hair dye products
4-(2,4-dihüdroksüfenüülaso)benseensulfoonhape ja selle naatriumsool (Acid Orange 6; CI 14270), kasutamiseks juuksevärvides