What it is: A weekly leave-in, repair treatment clinically proven to rebuild the structure of hair. This patent-pending technology makes hair 8x stronger*, smoother and shinier after one use. Leave this 450 heat protectant on for 10 minutes before adding your styler and heat for best results. Hair Type: Straight, Wavy, Curly, and Coily. Hair Texture: Fine, Medium, and Thick. Hair Concerns: - Shine. - Heat Protection. - Damage, Split Ends, and Breakage. Key Benefits: - Clinically shown to reconstruct hair. - Repairs and protects against damage. - Preferred by stylists over the leading bond builder. Highlighted Ingredients: - 3D Fortifying Technology: Forms a three-dimensional network to rebuild and resist damage. - Encapsulated Cellular Oil: Defends hair against thermal and UV damage and color fading. - Biomimetic Emollient Blend: Smooths and aligns hair fibers, resulting in softness and shine. Ingredient Callouts: This product is cruelty-free and comes in recyclable packaging. What Else You Need to Know: An easy step for your post-shower routine, this leave-in formula, for all hair types and levels of damage, is clinically shown to rebuild the structure of your hair via a patent-pending technology. The 3D fortifying technology prevents breakage, reduces visible signs of split ends, and offers heat protection up to 450 degrees Fahrenheit/232 degrees Celsius. Clinical Results: In a test: - Clinically shown to rebuild the structure of your hair. - Scientifically shown to make hair 8 times stronger and more resistant to future damage while adding softness, smoothness, shine, and manageability after just 1 use. - Shown to provide heat protection up to 450 degrees Fahrenheit/232 degrees Celsius. Clean at Sephora is our commitment to offering effective products without certain ingredients, such as parabens, sulfates, phthalates, and mineral oils. Learn more here - https://www.sephora.com/beauty/clean-planet-aware. Size: 0.5 FL OZ. Size: .33 FL Oz. Color: None. Gender: unisex. Age Group: adult.