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

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What distinguishes permanent colors from non-permanent colors?

Permanent colors are less damaging.

Permanent colors do not wash out and penetrate the hair shaft.

Permanent colors are distinguished by their ability to penetrate the hair shaft and create a long-lasting effect. These colors are formulated with a higher concentration of pigments and usually contain ammonia or other agents that open the cuticle, allowing the color to enter the hair. This process not only deposits the color deeply but also ensures that it lasts through multiple washes, which is why they are often preferred for clients looking for lasting results.

In contrast, non-permanent colors typically coat the surface of the hair rather than penetrating it. They usually fade after a certain number of washes as the color molecules are not designed to bond securely within the hair structure. This characteristic makes permanent colors more suitable for individuals seeking a significant change or longer-lasting effects, while non-permanent options can be ideal for temporary changes or experimentation with color.

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Non-permanent colors are always brighter.

There is no difference; they are the same.

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