(d.) none: hair that is damaged cannot be treated with haircolor 7. Which of the following accurately describes a step in the process of mixing and applying haircolor? a. Use an applicator bottle to apply products with thinner viscosity. b. Stir the mixture with an applicator brush until it is well blended. c. Use a 2:1 ratio; 2 ounces of haircolor and I ounce of developer. d. Use a stainless -steel bowl when mixing to speed up the developer.