When all three primary colors are present in equal proportions, the resulting color is:

Viscosity measures the concentration and strength of hydrogen peroxide.

Hair coloring products that are used primarily on prelightened hair to achieve pale and delicate colors are:

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

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

Primary and secondary colors that are positioned opposite each on the color wheel are:

The part of the hair shaft between the scalp and the hair that has been previously colored is the:

Overlapping hair color on previously tinted hair can cause breakage and create a visible line of:

Before performing a coloring service with an aniline derivative product, the client must have a(n):

Powdered off-the-scalp lighteners contain persulfate salts for quicker and stronger lightening.