Hair Coloring

What is the primary chemical used in permanent hair coloring?

• Ammonia

• Hydrogen Peroxide

• Paraphenylenediamine (PPD)

• Henna

Which of the following is a natural hair dye?

• Ammonia

• Henna

• Paraphenylenediamine (PPD)

• Hydrogen Peroxide

What role does hydrogen peroxide play in hair coloring?

• Acts as a colorant

• Acts as a developer

• Acts as a conditioner

• Acts as a preservative

Which layer of the hair does permanent hair dye penetrate?

• Cuticle

• Cortex

• Medulla

• Follicle

What is the pH range of most hair dyes?

• 2-3

• 4-5

• 9-10

• 11-12

Which of the following is a common allergen found in hair dyes?

• Ammonia

• Hydrogen Peroxide

• Paraphenylenediamine (PPD)

• Henna

What is the function of ammonia in hair dye?

• To add color

• To open the hair cuticle

• To condition the hair

• To neutralize the dye

Which of the following is a semi-permanent hair dye?

• Henna

• Ammonia-based dye

• Direct dye

• Oxidative dye

What is the main difference between permanent and semi-permanent hair dyes?

• Permanent dyes wash out faster

• Semi-permanent dyes penetrate the cortex

• Permanent dyes require a developer

• Semi-permanent dyes require a developer

Which of the following is a potential risk of using hair dyes?

• Hair growth

• Allergic reactions

• Increased hair strength

• Improved hair texture