onc naturalcolors (1n black) 4 fl. oz. (120 ml) healthier permanent hair dye with certified organic ingredients, ammonia free, vegan friendly, 100% gray coverage onc naturalcolors onc naturalcolors revolutionary natural hair color dye provides you the beautiful color you are looking for. without the risks of chemical laden hair color dyes. onc actually cares about your health and well-being. this is why onc design from the ground up is healthier, safer and yet very effective. onc is the healthier hair color dye with certified organic ingredients and perfect gray coverage. it uses heat to open the hair cuticles. this method protects the hair from damaging, unhealthy ammonia used in chemical hair color dye to open the cuticle. the ph value of onc is much lower than chemical hair color and many "natural" hair dyes. after rinsing the hair's ph value is closer to a neutral value. the scale layer of the hair, the cuticle, closes, and the color does not fade. providing a more natural, permanent solution. it is very important to use heat. after applying the mix, use medium heat from a hair dryer for 10 minutes. only use heat on the roots or regrowth hair, not on hair that is already colored. this opens the cuticles so that color can go in to the hair shaft. make sure to carefully follow the aftercare advisory; use sulfate-free, paraben-free, low ph shampoo and conditioner for the color to last and shine for weeks to come. if you buy one of the fashion shades use naturalcolors n series to improve results when using on more than 40% gray hair. mix the chosen color with the corresponding natural color. e.g. if you have chosen 5g, mix 1 fl. oz. of 5g with 1 fl. oz. of 5n together with 2 fl. oz. of colorfix. fashion shades: 4b, 4g, 4m, 4mc, 4rr, 5g, 5r, 5rf, 6c, 6ca, 6g, 6kr, 6rr, 7c, 7g, 7rn, 8ca, 8g, 9g, and 10c. natural shades: 1n, 2n, 3n, 4n, 5n, 6n, 7n, 8n, and 10n. total: 29 shades. read and follow advisory in the box