Understanding Hair Lightening Chemistry

What initiates the oxidation process in hair lightening?

• Applying heat to the lightening formula

• Exposure to sunlight

• Mixing hydrogen peroxide with the lightening formula

• Mixing water with the lightening formula

How long can lighteners be processed on the scalp?

• Up to 120 minutes

• Up to 90 minutes

• Up to 60 minutes

• Up to 30 minutes

What is the purpose of using a toner in hair lightening?

• To increase the lightening effect

• To add color back into the hair

• To clean the scalp

• To reduce hair damage

How many stages can natural hair go through during the decolorizing process?

• Up to 5 stages

• Up to 12 stages

• Up to 7 stages

• Up to 10 stages

Why is it important to control the decolorizing process?

• To achieve the correct contributing pigment

• To ensure even application of color

• To speed up the lightening process

• To prevent hair from becoming too dark

What happens when new color is deposited on lightened hair?

• The new color mixes with the remaining natural pigment

• The hair becomes immune to further coloring

• The hair returns to its natural color

• The new color completely covers the lightened hair

What contributes to the final hair color result?

• The temperature during the lightening process

• The original hair color only

• The type of shampoo used

• The remaining natural pigment and new hair color

What is the final stage hair cannot be lifted past safely?

• Dark yellow stage

• Pale yellow stage

• Bright white stage

• Light brown stage

What can excessive diffusion during the lightening process cause?

• Increased hair growth

• Excessive damage to the hair

• A change in hair texture

• Permanent hair straightening

What is the key consideration when lightening hair?

• Using the highest strength of lightener available

• Achieving the lightest shade possible

• Finishing the process as quickly as possible

• Maintaining the hair's integrity