Ace the Kentucky Cosmetology Exam 2025 – Flaunt Your Skills with Flair!

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What is a no-lye relaxer made primarily from?

Sodium hydroxide

Ammonium thioglycolate

Guanidine hydroxide

A no-lye relaxer is primarily made from guanidine hydroxide. This type of relaxer is often preferred because it is less harsh on the hair and scalp compared to lye relaxers, which utilize sodium hydroxide. Guanidine hydroxide is a milder chemical that works to relax the hair by breaking down the protein bonds in the strands, leading to the desired straightening effect.

No-lye relaxers are also considered more suitable for sensitive scalp types and can provide a more moisturizing effect due to their formulation. The application of no-lye relaxers typically requires a longer processing time, but the results can be smoother and less damaging for many clients. Understanding this chemical and its implications for hair health is essential for any cosmetology professional dealing with hair treatments.

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Calcium hydroxide

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