New Hampshire Cosmetology Practice Exam

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What effect does a 20-volume developer have in hair coloring?

Lifts hair color by 1-2 levels

A 20-volume developer is primarily designed to lift hair color by 1-2 levels, making it suitable for standard color processing. This developer contains a hydrogen peroxide concentration that is effective for most typical coloring tasks, especially when clients desire a subtle change or enhancement of their existing hair color.

When using a 20-volume developer, the oxidation reaction it catalyzes allows for moderate lifting of the hair's natural pigment while simultaneously allowing for color deposit. It works well with permanent hair color formulations that require a certain level of lift along with reliable color retention.

For deeper or more dramatic color changes beyond this lifting capacity, stronger developers might be utilized, but they carry a higher risk of damage to the hair. Thus, understanding the specific effects of a 20-volume developer is crucial for achieving the desired results while maintaining hair health.

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Lifts hair color by 3-4 levels

Deposits color into hair

Lightens hair beyond 4 levels

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