It's the catalyst to lightener and toners.
Mix with ratios of 1:1, 1:1.5, 1:2 with lightener or toners.
WATER/AQUA/EAU, MINERAL OIL/PARAFFINUM LIQUIDUM/HUILE MINERALE, HYDROGEN PEROXIDE, DECYL OLEATE, CETYL ALCOHOL, STEARYL ALCOHOL, PEG-40 CASTOR OIL, SODIUM CETEARYL SULFATE, DISODIUM EDTA, TETRASODIUM PYROPHOSPHATE, ETIDRONIC ACID, PHOSPHORIC ACID.