Rock the Colorado Cosmetology Written Exam 2026 – Beautify Your Career Today!

Question: 1 / 425

Which type of perm is recommended for extremely porous hair?

Alkaline waves

Extremely porous hair is hair that has a rough and damaged cuticle layer, making it difficult for the hair to retain moisture and hold a curl. Alkaline waves, also known as cold waves, are recommended for extremely porous hair because they have a higher pH level and are able to penetrate the hair shaft more easily, resulting in a stronger and longer lasting curl. B and D are incorrect because they both contain thioglycolic acid, which can further damage the hair. True acid waves have a lower pH level and are better for fine or color-treated hair, but may not be as effective on extremely porous hair. Therefore, A is the most suitable option for this type of hair.

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Exothermic waves

True acid waves

Thio-free waves

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