Give your scalp a little TLC with this 15-minute pre-wash treatment. Featuring 0.15% Salicylic Acid, it works to exfoliate, gently tackling loose flakes and excess oil, with a refreshing peppermint cooling effect to soothe scalp sensitivity. Give your scalp a little TLC with this 15-minute pre-wash treatment. Featuring 0.15% Salicylic Acid, it works to exfoliate, gently tackling loose flakes and excess oil, with a refreshing peppermint cooling effect to soothe scalp sensitivity. Founded by celebrity hair stylist Helen Reavy, Act + Acre is rooted in the belief that great hair starts at the scalp. Creating and patenting the Cold Processed® method, the result is a nutrient-rich formula that leads to stronger, more resilient hair health.