List Of 30 Volume Developer To Lighten Hair References. Web opt for a volume 30 developer to change your color by 3 to 4 shades. As with the 20, it's also a good choice if you're looking to cover up some gray hair.
These volumes refer to how much the product will oxidize and therefore lift the cuticle of the hair shaft. Ratio 1:1 creates a thick mixture that is suitable to highlight your hair. It will be available in select stores, but you can also get it online.
