Goldwell Topchic Permanent Hair Color 4N Mid Brown 2 Ounce 60 Milliliters Goldwell Topchic Professional Hair Color helps in achieving your target color every time you want; the permanent alkaline hair color for superb color results. Infused with hydrolyzed wheat protein and panthenol to add strength and shine to hair. Impeccable quality. Durable color. Accurate. Perfect tones. Formulated with Color Link, a patented technology that allows color molecules to "link" together. Its patented penetration system ensures even pigment distribution from scalp to ends. Total coverage. All Goldwell hair color is aligned with the Goldwell Master Palette. The Goldwell lotions and colors have been formulated in order to work in synergy and to achieve the perfect color. Topchic Lotion ensures the perfect nuance, texture, pH, mixture alkalinity. Application: Apply Topchic to dry hair. It is always recommended to wear gloves. According to the target result, choose the appropriate lotion and proceed with the mixing ratio as shown in the table below: Target result Topchic lotion/volume Mixing ratio lotion: color No lightening 10 vol. 3% 1:1 1 level of lift; grey hair coverage; tone on tone color 20 vol. 6% 1:1 2 levels of lift (Topchic 2-10) 30 vol. 9% 1:1 3-4 levels of lift (Topchic 2-10) 40 vol. 12% 1:1 3-4 levels of lift (Topchic 11-12 Highlift color) 30 vol. 9% 2:1 4-5 levels of lift (Topchic 11-12 high lift color) 40 vol. 12% 2:1 To achieve one level of lift without pre-lightening, add Blonding Cream or Blonding Cream Ash (cooler result). Do not use Blonding Cream or Blonding Cream Ash with the Highlift Series 12 shades. As with any other chemical service, a sensitivity test or patch test is required to prevent any undesirable effects. *This is a professional product and should be used only by a trained individual. The seller is not liable for any adverse outcome resulting from the use of this product.