Micro-Mends / Fortifies / Seals Chock-full of our patented Alpha Keratin 60ku® protein, Virtue® Split End Serum mends and seals frayed, brittle ends on contact, restoring hair to its pre-damaged state. It takes repair to a whole new level, actually restoring the color and vibrancy of fragile hair as it reinforces damaged ends. Color-safe, paraben-free, gluten-free, vegan.