CHS Hair Coloring & Chemical Treatments

Question 1

What is the purpose of hair coloring?

Accepted Answer

To change the natural hair color

Answer

The fundamental purpose of hair coloring is to alter the pigment of the hair, whether to cover gray, lighten, darken, or add new tones and shades. It's a cosmetic process designed to achieve a desired aesthetic change in hair color. This allows individuals to express their style or refresh their look.

Question 2

Which of the following is a permanent hair coloring method?

Accepted Answer

Permanent color

Answer

Permanent hair color is formulated to deeply penetrate the hair shaft and chemically alter the hair's natural pigment. Unlike temporary or demi-permanent colors, it does not wash out and grows out with the hair, providing a lasting color change. This method is used for significant color changes, complete gray coverage, and long-term results.

Question 3

What is the role of a developer in hair coloring?

Accepted Answer

To activate and open the cuticle

Answer

A developer, typically hydrogen peroxide, is crucial in hair coloring as it activates the color molecules. It works by gently opening the hair's outer layer, the cuticle, allowing the color pigments to penetrate into the cortex where they can deposit or lighten the hair's natural melanin. This process is essential for the chemical reaction that results in permanent or demi-permanent color changes.

Question 4

Why is patch testing important before hair coloring?

Accepted Answer

To test for allergies

Answer

Patch testing, also known as a skin allergy test, is a vital safety measure performed 24-48 hours before a hair coloring service. It involves applying a small amount of the product to a discreet area of the skin to check for any adverse allergic reactions. This helps prevent severe allergic responses, such as contact dermatitis, which can be painful and dangerous for the client.

Question 5

What is the difference between demi-permanent and permanent hair color?

Accepted Answer

Demi-permanent does not lift natural color

Answer

The key difference lies in their chemical composition and action. Permanent hair color uses a higher volume developer to open the cuticle and penetrate the cortex, allowing it to both lift (lighten) natural pigment and deposit new color. Demi-permanent color, however, uses a lower volume developer, only depositing color onto the hair shaft without lifting the natural underlying pigment, resulting in a less permanent, fade-out color.

(CHS) Certified Hair Stylist Practice Test

(CHS) Certified Hair Stylist Practice Test

CHS Hair Coloring & Chemical Treatments