The Blacklight Hyd Blonde Science Deep Hydrating Mask delivers intense moisture to dry or dehydrated hair. Powered by HYD technology enriched with hyaluronic acid and nourishing superfoods, it helps attract and retain moisture within the hair fiber. Its rich formula deeply nourishes the hair while improving elasticity, softness and shine, leaving hair healthier-looking and silky. Provides deep hydration to dry hair Improves softness and elasticity Enhances shine and smoothness HOW TO USE After shampooing, apply to clean towel-dried hair through mid-lengths and ends. Leave on for 5 to 10 minutes, then rinse thoroughly. Use once or twice weekly or as needed.