Examples for which developer to use on Gray hair.
GE …Has one shade lifting and 5% of hydrogen peroxide .
GE … For optimum gray coverage, 5% of hydrogen peroxide and lift natural level up to one level.
Example of GE (Gray Eliminator): GE is similar as 20 vol but GE has less hydrogen peroxide then 20 vol. GE has 5% of hydrogen peroxide so it gives more deposit time then 20 vol which has 6% of hydrogen peroxide. GE gives more color to the gray hairs and less fading time. Example: If client’s natural hair color is 4N with 40% of gray hair and desire color is 4C. Da Vinci hair color recommend GE. Mix 40% of 4N with 60% of desire color 4C. Second example: If client’s natural hair color is 6N with 35% of gray hair and desire color is 6PR. Da Vinci hair color recommend GE. Mix 35% of 6N with 65% of desire color 6PR.