Schwarzkopf Igora Royal Permanent color provides total coverage and intensity while maintaining scalp comfort. Its formula allows uniform color result, even on porous hair. Pigment penetrates the hair efficiently and is locked in for long-lasting, vibrant color. Use by non-licensed persons may result in unsatisfactory performance. Hair color related products, such as demi-permanent colors, permanent colors, toners, peroxides and bleaches may cause allergic reactions, which in rare instances can be severe. Conduct hypersensitivity and allergic patch test 48 hours prior to each application. Read and follow instructions carefully. These products must not be used on eyelashes or eyebrows. To do so may cause blindness. Wear suitable gloves. Keep out of reach of children.