Cosmetology · Chemical Texture Services

Performing a strand test during a chemical service allows the cosmetologist to:

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Correct answer

Monitor how the hair is processing and judge when it is done

A Color the hair
B Skip processing
C Avoid neutralizing
D Monitor how the hair is processing and judge when it is done

Why this is the answer

Taking periodic strand tests during a chemical service (gently checking a test strand) lets the cosmetologist monitor how the hair is processing — for example, checking curl formation during a perm or color development — and judge when the desired result is reached so the product can be rinsed/neutralized at the right time. This helps prevent over- or under-processing. Strand testing before and during the service is a recurring safeguard. Understanding its monitoring role is core chemical-service knowledge on the exam.

Source: Hair Care — In-Process Strand Test

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About this topic: Chemical Texture Services

Chemical texture services — permanent waving, relaxing and curl reformation — are tested on the chemistry (reduction and oxidation), the products (thio, hydroxide), processing and neutralising, and the safety checks before and during the service. This is one of 11 Hair Care questions on chemical texture services, each with a full explanation on a single study page.

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Performing a strand test during a chemical service allows the cosmetologist to:

Why this is the answer

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About this topic: Chemical Texture Services

Related questions

Chemical texture services (perms and relaxers) permanently change the hair by:

Why is a thorough hair and scalp analysis (and often a strand test) essential before a chemical texture service?

An open sore, abrasion, or scalp irritation generally means a chemical texture service should be:

When performing a chemical service, the cosmetologist should protect themselves by:

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