Advanced Clinicals Keratin Sleek + Smooth Hair Mask is a deep-conditioning treatment designed to repair frizzy, weak, and damaged hair. Enriched with keratin, shea butter, and coconut oil, it strengthens hair strands, restores moisture, reduces frizz, and adds long-lasting shine. Suitable for color-treated hair, this mask delivers salon-like smoothness at home while improving hair texture and manageability with regular use.