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Clients with hair in questionable condition who request chemical services should be required to sign a:

Nonammonia color that adds shine and tone to the hair

When applying color using the brush-and-bowl method, the mixing bowl should be:

Tones can be described as cool, warm, or:

A color achieved by mixing equal parts of a secondary color and its neighboring primary color on the color wheel is a:

The darkest hair colors in the level system are identified as being a level:

Dye precursors that combine with hydrogen peroxide to form larger, permanent dye molecules are called:

Process by which oxygen is released

The classifications of nonoxidative haircolor are demipermanent and permanent.

Pheomelanin is the melanin that gives blond and red colors hair.