Miracles happen! Daily leave-in treatment fills in gaps in hair's cuticle, leaving high-lifted or highlighted blonde hair 78% stronger after one application*! This blow-dry reparative lotion provides increased strengthening with continued use while it protects hair against mechanical stress**. Contains 15x more Keravis than other Perfect 4 Platinum products to help hair recover up to 78% of the strength lost during chemical lightening*. * Hair recovers up to 78% of the strength lost during chemical lightening. ** When used as a system. Apply to damp hair. Blow-dry and style as usual.