Nicen easy colour blend foam makes colouring your hair and experience to look forward to the advanced foam is an effortless no drip colour that provides 100 grey coverage and colour intensity that lasts up to 8 weeks the exclusive colour blend technology gives you a pigment rich base layered with contouring highlights additionally the formula with colourseal conditioning gloss deliivers intense shine not to be used on children and a skin allergy test must be done 48 hours before