Understanding Hair Coloring Techniques

What are the two main categories of hair coloring products?

• Temporary and permanent

• Natural and synthetic

• Organic and inorganic

• Non-oxidative and oxidative

What ingredient in oxidative hair colors helps to raise the cuticle?

• Hydrogen peroxide

• Ammonia or an ammonia substitute

• Developer

• Dye molecules

Which type of hair color does not require a patch test?

• Permanent

• Demi-permanent

• Semi-permanent

• Temporary

How long does most semi-permanent hair color last?

• 2-4 weeks

• 4-6 weeks

• 8-10 weeks

• 6-8 weeks

Which hair color type is known for coating the hair surface without penetrating the cuticle layer?

• Semi-permanent

• Demi-permanent

• Permanent

• Temporary

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

• Demi-permanent only deposits color without lightening

• Permanent hair color requires no developer

• Demi-permanent can lighten hair

• Permanent hair color is less damaging

What is the role of developers in hair coloring?

• To decrease the pH

• To dilute the color

• To supply oxygen gas for color development

• To thicken the product

What volume of developer is typically used for gray coverage services?

• 40 volume

• 30 volume

• 20 volume

• 10 volume

What does a positive patch test result indicate?

• The client is allergic and should not receive the service

• The client is not allergic to the hair color

• The client may safely receive the hair color service

• The hair color is of high quality

What determines the lifting ability of a hair color formula?

• The type of hair color used

• The pH level of the developer

• The combination of shades selected and the volume of the developer

• The type of alkalizing ingredient used