Safety: Hair colourants can cause severe allergic reactions. Read and follow the instructions. This product is not intended for use on persons under the age of 16. Temporary "black henna" tattoos may increase your risk of allergy. Do not colour your hair if: You have a rash on your face or sensitive, irritated and damaged scalp, You have ever experienced any reactions after colouring your hair, You have experienced a reaction to a temporary "black henna" tattoo in the past. You must do an allergy alert test without fail 48 hours before each use of this product (follow the instruction leaflet). Remember to buy this product in advance to do the allergy alert test 48 hours before use. The developer contains hydrogen peroxide. The cream colourant contains: phenylenediamines, resorcinol and ammonia. Avoid contact of the product with eyes. Do not use to dye eyelashes or eyebrows. Rinse eyes immediately and thoroughly if product comes into contact with them. Wear the gloves supplied in the carton. Rinse hair thoroughly after application. Wait 2 weeks after lightening, relaxing or perming the hair before applying the colourant. Do not use if your hair has been coloured with henna or a progressive colourant. Keep out of reach of children. Do not use on children. Follow the instruction leaflet.