TRESemmé Biotin + Repair 7 Shampoo is a fortifying formula infused with biotin, collagen, and 7 essential repair nutrients to strengthen weak, brittle hair. Designed to reduce breakage and split ends, this shampoo helps restore hair’s natural resilience while gently cleansing. Ideal for over-processed, heat-damaged, or thinning hair, the sulfate-free formula in this 700 ml bottle promotes visibly healthier, fuller-looking strands with continued use.