Schwarzkopf Keratin Color Permanent Hair Dye Color Cream 1.0 Black Onyx - Salon-inspired hair color for womenThis permanent hair dye provides rich striking color on all hair textures - with minimal damage*. The Keratin hair color formula was developed with professionals to provide salon-quality hair color and brilliant shine. In addition our 3-step Bond Enforcing System creates bonds and strengthens your hair leaving your hair 5x stronger** after coloring. Keratin Color also reduces frizz by providing humidity resistance for 72 hours.*** Our pre-color serum containing Vitamin B6 and Collagen primes the hair. We recommend repeating the application of the hair dye in tube every 4 weeks for even color from root to tip.Established 1898 Schwarzkopf has 125+ years of hair expertise providing salon inspired hair color at home.The product benefits at a glance:Leaves hair 5x stronger**Long-lasting color & root touch upPre-color serum with vitamin B6 and collagenSuitable for all hair texturesColor: 1.0 Black Onyx* Against combing breakage on damaged hair vs. untreated** Against combing breakage on damaged hair vs. a non-conditioning shampoo*** vs. untreated hair in high humidity conditions