Education and Communications Do you use developer with Ion permanent brights? Do you use developer with Ion permanent brights? Apply on pre-lightened or highlighted hair, 1:1 mixing ratio. Two ounces of color to two ounces of 10 Volume ion Sensitive Scalp Creme Developer. ... Work gently through hair as you would a shampoo. Related Posts:What developer do I use with ion permanent brights?What happens if I use ion permanent brights without developer?Why is Dove shampoo bad?Do I apply ion brights to wet or dry hair?