WarningsKeep out of reach of children. As with all dietary supplements, consult your healthcare professional before use. See product label for more information. Keep out of reach of children. Hair colourants can cause severe allergic reaction. Read and follow 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 reaction after colouring your hair. you have experienced a reaction to a temporary "black henna" tattoo in the past. Contains phenylenediamines. Do not use to dye eyelashes or eyebrows, to do so may cause injurious to the ye and could cause blindness. A preliminary skin sensitivity test according to the accompanying directions should be carried out 48 hours before use.