Hair Coloring

What is the primary chemical process involved in permanent hair coloring?

• Oxidation

• Reduction

• Hydrolysis

• Sublimation

Which of the following compounds is commonly used as a developer in hair coloring?

• Ammonia

• Hydrogen Peroxide

• Sodium Chloride

• Ethanol

What is the role of ammonia in hair coloring?

• To add color

• To open the hair cuticle

• To neutralize the dye

• To condition the hair

Which part of the hair structure is primarily affected by hair coloring?

• 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 natural hair dye?

• Henna

• Paraffin

• Silicone

• Polyethylene

What is the function of a colorant in hair dye?

• To moisturize the hair

• To provide shine

• To deposit color

• To remove impurities

Which type of bond is broken during the hair bleaching process?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Peptide bond

What is the main difference between temporary and permanent hair color?

• Temporary color penetrates the cortex

• Permanent color only coats the hair

• Temporary color washes out easily

• Permanent color is not affected by UV light

Which of the following is a potential risk of frequent hair coloring?

• Increased hair growth

• Hair thinning

• Improved hair texture

• Stronger hair