Kenra Professional Permanent Developer 20 Volume were specially formulated for use with Kenra Color Permanent Coloring Cremes. Creamy consistency allows for easy mixing and precise application for all your hair color needs.

In a non-metallic bowl, mix one-part Kenra Color Permanent Coloring Creme with one-part Kenra Color Permanent Coloring Creme Developer 10-40 Volume (1:1).
Spray hair with Kenra Color Porosity Equalizing Spray and apply color.
Process for 30 minutes/up to 45 minutes for gray coverage.