Put 40 grams SnowWhite in a non-metal tray. Add 80 ml DMI Lotion, 3%, 6% or 9%. Apply this to dry, unwashed hair. If applied down to the skin, you should first treat the lengths and ends and then the roots. Maximum time to set: 50 minutes. As soon as the desired decolouring has been achieved, you should wash the hair using KeraMaxShampoo and subsequently treat it using KeraLock Acidifier and KeraShield Leave-In.