This leave-in treatment formulated with 2% squalane blend deeply hydrates and strengthens the hair to eliminate frizz and reduce breakage. This leave-in treatment formulated with 2% squalane blend deeply hydrates and strengthens the hair to eliminate frizz and reduce breakage. 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.