Chemistry & ProductsQuestion 427 of 484
A bottle of 30-volume hydrogen peroxide developer is approximately what percentage of hydrogen peroxide by weight, and what is its main coloring purpose?
a.About 3 percent; deposit-only with no lift
b.About 9 percent; lifts approximately 2 to 3 levels and is a common developer for permanent single-process color
c.About 30 percent; reserved for chemical relaxer service only
d.About 60 percent; only used in salons with a chemistry license
Explanation
Each 'volume' of hydrogen peroxide corresponds to roughly 0.3 percent peroxide by weight, so 30-volume is approximately 9 percent. At that concentration the developer can lift natural pigment about 2 to 3 levels while depositing oxidative color, the workhorse choice for many single-process colors. California licensees apply oxidative color under CCR Title 16 §979.4. Option A describes 10-volume, which is for deposit only. Option C inflates the percentage to a level not sold for cosmetic use. Option D invents a 'chemistry license' that does not exist in California beauty regulation.
Law Reference: CCR Title 16 §979.4Practice all 484 questions free — no signup required.
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