CHS CHS Tools, Equipment & Product Knowledge 2

Question 1

Shears with a convex edge (razor edge) are preferred for:

Accepted Answer

Slide cutting and precise blunt cuts

Answer

Convex-edge shears are extremely sharp and smooth, making them ideal for slide cutting and clean blunt cuts with minimal hair damage.

Question 2

A clipper guard numbered #4 typically cuts hair to what length?

Accepted Answer

1/2 inch

Answer

Clipper guard #4 leaves hair at 1/2 inch (12 mm), with each guard number representing an additional 1/8 inch of length.

Question 3

What does 'pH balanced' mean on a hair product label?

Accepted Answer

The product's pH is close to the natural pH of hair and scalp (4.5–5.5)

Answer

pH-balanced hair products are formulated near the hair's natural acidic range of 4.5–5.5, which helps maintain a smooth, closed cuticle.

Question 4

When sanitizing metal shears between clients, the stylist should:

Accepted Answer

Wipe with 70% isopropyl alcohol and allow to air dry

Answer

70% isopropyl alcohol effectively disinfects metal shears quickly; prolonged bleach exposure can corrode the metal and damage the blade.

Question 5

Which product is applied before heat styling to protect hair from thermal damage?

Accepted Answer

Heat protectant

Answer

Heat protectants form a coating over the hair shaft that reduces moisture loss and limits direct heat transfer to the cuticle and cortex.

(CHS) Certified Hair Stylist Practice Test