Hair colorants can cause severe allergic reactions. Carefully read and follow the instruction leaflet in the box. This product contains ingredients which may cause skin irritation on certain individuals and the sensitivity test according to the instructions in the instruction leaflet should be performed each time before using the product. This product must not be used for coloring facial hair, eyelashes or eyebrows; to do so may cause blindness. Gloves should be worn during handling. The proportion for mixing color and color developer must always be 1:1. This product is not intended for use on children under the age of 16. Temporary black henna tattoos may increase your risk of allergy. Do not use this product if you have sensitivities, rashes or other skin irritations on your face or scalp, or if you have ever experienced a reaction to a temporary black henna tattoo. Contains phenylenediamines and hydrogen peroxide. Avoid contact with eyes. If contact with eyes occurs, flush immediately with plenty of water. Rinse hair well after application. Store between 50 degrees F and 80 degrees F (10 degrees C and 27 degrees C).