Formula 1
Mix 2 teaspoons of powder bleach with 25 ml's of 9% hydrogen peroxide. 4 applications for six shades lift.
Pre-Bleach to a
Natural Base 10
FORMULA
This formula is created with sustainability in mind. The volumes suggested are enough for a successful result on a test strip. For actual whole head and root applications you would use the same formulas but increase the amounts to the manufacturers recommendations.
Target Shade Goldwell 10N
To colour Base Shade number 4 to a Goldwell number 10N
use the following formulas.
Application:
To begin pre lighten the Natural Base 4 six shades to a base 10 using formula 1 then washout the bleach and apply formula 2 with a sponge pressing the Goldwell 10N. into the hair shaft (please watch the video). Leave for twenty minutes to pigmentate. Mix Formula 3 (Do not shampoo out formula 2) Apply Formula 3 over the top of Formula 2. and leave to activate for forty minutes. Shampoo and blow dry.