California Cosmetologist License & PSI Theory Exam Preparation Application Exam Information
12% published emphasis

Chemical Texture Services

Permanent waving, relaxers, compatibility, strand tests, wrapping, neutralization, and chemical safety.

Compatibility comes first

Metallic salts, previous relaxer, damage, and scalp condition may contraindicate service.

Control processing

Product strength, strand tests, timing, wrapping, and rinsing affect the result.

Avoid overlap

Previously processed hair is more vulnerable to breakage.

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