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Discover our NEW Sleek & Stay Heat-Activated Serum providing 10 days of sleek & shine hair and semi-permanent results up to 5 washes. Powered by a patented technology [ALPHA-SILANE] this formula coats the hair fiber with a waterproof (up to 80%) & heat-protecting film (up to 230°c). SHAKE WELL BEFORE USE. Follow the 4-steps Keratin Sleek System and apply this serum for 10 days of sleek of & shine hair, up to 5 washes: SHAMPOO: Gently cleanses hair & scalp. CONDITIONER: Detangles & softens. MASK: Intensely smooths hair fiber from root to tips, controls frizz & boosts shine. HEAT-ACTIVATED SERUM: Coats hair fiber with a waterproof & heat-protecting film for frizz-free, long-lasting sleek & high shine. Garnier commits to greener beauty: Vegan Formula, Cruelty-Free International approved, made in a factory that has reached 100% Renewable Energy.
Recent listings across all stores: $18.79 - $18.99
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Product details updated 31 Jul 2026. Retailer information can change; check the packaging for current product, ingredient, and allergen details.