The ProActive Progressive Brush has deflating action for volume reduction, hair restructuring, shielding and hair straightening. This unique intensive repair technology, which is formulated with keratin and collagen, aims to replenish nutrients and restore hair fiber while also having moisturizing properties that leave hair feeling soft, supple, straight, and sealed. How to apply: Using a brush, distribute the product half a centimeter from the root of dry, clean hair, comb through each strand to ensure even distribution. Give discolored or highly porous hair about 20 minutes, and virgin or resistant hair about 50 minutes. Cleanse