Gently massage into wet hair lather and rinse thoroughly. Repeat if desired. Can be used daily. WARNINGS: This product contains ingredients which may cause skin irritation on certain individuals and a preliminary test according to accompanying directions should first be made. This product must not be used for dyeing the eyelashes or eyebrows to do so may cause blindness. Do not use if you have skin depigmentation problems such as white patches on your skin (a condition called Vitiligo) or if you have a family history of skin depigmentation problems as an allergic reaction or skin irritation may cause loss of skin pigment.