This product is one violet hair mask, there adds moisture past, the laws care to hair. The cure remove undesirable yellow toner seedli hair past, the laws leaves what with one cold tone. This mask match to you with bleached, white, gray or blond have. The cure can also used to synthetic hairtypes. Application: apply it desired quantity in throughout hair, but with focus on lengths past, the laws tips. Lots well in in hair past, the laws let sit in 3-5 minutes. If one wishes one more cold look can one let it sit in 5-7 minutes.We recommends to wash hair with osmo super silver no yellow shampoo before lining optimal result.