The Vegetal Hair Colors are semi-permanent, lasting for 5-6 washes, and use no peroxide, ammonia, or diaminobenzene. They do not lighten or affect hair structure. They are not intended for use with grey hair, just simply to get a sense of how the color mixes with your type of hair. They are not intended for use with grey hair, just simply to get a sense of how the color mixes with your type of hair. UPC: 666248001478