PureOlogy ColourMax spray-on colour sealant protects hair colour against the fading and oxidizing sun. It's low pH closes the hair cuticle, so colour is sealed in as well as protected for maximum colour preservation. Containing the highest levels of Heliogenol and other potent antioxidants to maximize colour retention, it's a formidable force and inhibitor against damaging UVA / UVB rays. At the same time, it tackles tangles, while adding dazzling shine and noticeable volume