Milk Shake Color Specifics Color Sealing Shampoo Post-colour shampoo. Cleanses gently, sealing the cosmetic colour within the hair, improving the duration of the colour and enhancing its shine. With Bio genius Technology*, for restructured hair with intense colour and long-lasting vibrancy. For professional use only. *Bio genius Technology is a patented technology that encapsulates specific active ingredients and allows for their utmost efficiency to be delivered and released in the hair for a deep and long-lasting result. For professional use only.