Mix the L'oreal HiColor dye in the included bowl. To mix the HiColor for dark hair only, mix 1 part (1.74 oz) of HiColor hair color to 1.5 parts (2.5 oz). of the included Oreor Creme Developer. To mix HiColor for red highlights, mix 1 part hair color (1.2 oz) to 2 parts (2.4 oz) of the included Oreor Creme Developer.

What developer do I use for Loreal HiColor?

Measure 2.4 fl. oz. of Oreor 30 or 40 Volume Developer depending on the degree of lift desired into a non-metallic shaker or bowl. If hair is relaxed, use 20 volume developer only.

Do you have to use developer with HiColor?

Hi-Lift dyes are designed to give extra lift so you can get a vivid colour on dark hair, they use a higher strength peroxide for this than regular permanent dyes. So, no, they won't work without the developer.