Topchic is the permanent alkaline hair color for superb color results. Infused with hydrolyzed wheat protein and panthenol to add strength and shine to hair. Impeccable quality. Durable color. Get the desired effect. Accurate. Formulated with Color Link, a patented technology that allows color molecules to "link" together. Its Patented Penetration System ensures even pigment distribution from scalp to ends. Total coverage. Precision in measurement. Tools designed for predictability. All Goldwell hair color is aligned with the Goldwell Master Palette. The Color Depot System guarantees exact dispensing and mixing. Unique to Goldwell products. Exceptional results for you.