Reset your scalp environment with the Biolage Scalp Sync Purifying Exfoliating Scalp Concentrate. This professional-grade, pre-shampoo clarifying treatment acts as a skin-peel for your hair, lifting stubborn buildup, dead skin cells, and excess sebum right at the root. Infused with a micro-dosed balancing concentrate of filtered glycolic acid and a fermented tea blend, it detoxifies the hair follicles after just a single use, leaving your scalp feeling profoundly refreshed, rebalanced, and clear for up to 72 hours.