NOCTI Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

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What characteristic describes semi-permanent hair color?

It lightens hair significantly

It coats the hair shaft

Semi-permanent hair color is designed to provide a temporary change to hair color while not making a long-lasting commitment. The characteristic that best describes it is that it coats the hair shaft. This means that the color molecules penetrate the hair's cuticle to some degree but do not provide a permanent change, as they do not alter the hair's natural pigmentation.

Since semi-permanent colors do not significantly lighten hair, their primary function is to deposit color without the use of ammonia or a developer, which distinguishes them from permanent hair color products. Furthermore, they do not permanently alter the hair color as they tend to wash out over time, typically lasting through several shampoos. This makes semi-permanent color an ideal choice for those looking for subtle changes or to enhance their natural shade without long-term effects.

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It requires a developer

It permanently alters hair color

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