Biolage Scalp Sync Purifying Concentrate – 6.8oz – Detox and refresh your scalp with this deep-cleansing pre-shampoo treatment. Formulated with fermented tea and glycolic acid, it helps remove buildup, excess oil, and impurities while balancing the scalp’s microbiome. Use weekly to promote a clean, healthy scalp and boost the effectiveness of your hair care routine.