Protek helps prevent skin irritation and staining during technical hair services such as colouring, perming, bleaching and relaxing. Protek will not interfere with the performance or timing of the service. Protek only affects the skin and not the hair; if Protek gets on hair, colour will still work on hair without staining skin. Great when colouring fine hair where scalp shows through. Directions Add 10 ml (2 tsp.) to your color formula (or any other chemical treatment). For even more protection, PROTEK can be added directly on the scalp and hairline.