Colorado Cosmetology Written Practice Exam

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Prepare for the Colorado Cosmetology Test. Study with detailed flashcards and multiple choice questions, each featuring insights and explanations. Gear up for success!

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Which type of perm is recommended for extremely porous hair?

Alkaline waves
Exothermic waves
True acid waves
Thio-free waves

The correct answer is: 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.