Enrich your troublesome tresses with the intensive care of the Redken Smooth Lock Butter Silk Intensive Rinse-Out Treatment, a super-hydrating treatment for unruly hair types. Perfect for those who suffer from brittle ends, unwanted frizz & dehydrated strands, this sumptuous mask treatment immerses your hair in nutritional hydration. It replenishes damaged areas of your hair with the Thermo Active Polymer, a targeted treatment that penetrates the internal structure of your hair to leave a glossy, silky-soft finish. For best results, shampoo your hair with Redken Smooth Lock Shampoo & apply the Redken Smooth Lock Butter Silk Mask to damp hair, leave for 5-15 minutes then rinse.