It is the only color system that includes nutritional components in its final formula, thanks to the addition of wheat and Hydrolyzed Collagen protein. Provides essential nutrients for hair fiber regeneration, resulting in silky, hydrated hair. kuul Color also provides a higher amount of pigment in your hair, it is enriched by a powerful UV filter and the results are incomparable: Full cane coverage, strong, uniform and bright colors, NUTRITIVE and moisturizing Coloring, Hydrolyzed collagen, powerful protection filter against lightning.