Idaho Cosmetology Licensure Practice Exam

Question: 1 / 400

What is the main ingredient in most hair color products that facilitates penetration?

Ammonia

The main ingredient in most hair color products that facilitates penetration is ammonia. Ammonia serves a crucial role in the hair coloring process by raising the pH level of the hair. When ammonia is present, it opens up the cuticle, which is the outer layer of the hair shaft. This allows the color molecules to penetrate into the hair more effectively, ensuring that the hair dye can achieve the desired results.

Additionally, ammonia helps to create a more alkaline environment, which stabilizes the color formulation and enhances its effectiveness. Although other ingredients like hydrogen peroxide play a significant role in the coloration process by acting as an oxidizer, it is ammonia that primarily aids in the penetration of the color into the hair structure. This is why ammonia is essential in many permanent and semi-permanent hair coloring products.

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Hydrogen peroxide

Alcohol

Glycerin

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