The Best What Does Developer Do For Hair Color 2023. Web posted on november 12, 2022 by veronica sims share on social media developer is a chemical used in hair dye to change the hair color. In general, the ratio between hair dye and developer is 1:1, which means you’ll need equal measurements for both dye and developer.

If you've seen developer at your local beauty store, you'll notice that there are many different levels. Web the first thing to figure out is the amount of dye to cover your hair fully. Web what does the developer do to the hair?