All haircolor products, except ____________require a patch test.

All permanent haircolor products and lighteners contain both a developer or________________ and an ____________ ingredient.

_____________________raises the cuticle of the hair so that the haircolor can penetrate into the cortex.

____________ haircolors are ___________________ colors that make only a physical change, not a chemical change, in the hair shaft, and no patch test is required.

Traditional ___________________is a no-lift, deposit-only, non-oxidation haircolor that is not mixed with peroxide and is formulated to last through several shampoos, depending on the hair's porosity.

_________________________, also known as no-lift, deposit-only color, is formulated to deposit but not lighten color and are mixed with low-volume developer.

A ____________________is a common way to describe a haircolor service that adds shine and color to the hair.

________________________lighten and deposit color at the same time and in a single process because they are more alkaline and usually mixed with a higher-volume developer.

Permanent haircolor is used to

Permanent haircolors contain uncolored dye precursors, called _________________which are small and can easily penetrate into the hair shaft.

A technique called a _____________ is a combination of equal parts of a prepared permanent color mixture and shampoo used during the last five minutes of a haircolor service and worked through the hair to refresh the ends.

_______________haircolors are also referred to as gradual colors.

____________________, also known as vegetable haircolors, such as henna, are colors obtained from the leaves or bark of plants.

_________________, also known as progressive haircolors, are haircolors containing metal salts that change hair color gradually by progressive buildup and exposure to air, creating a dull, metallic appearance.

Developers have a pH between

______________measures the concentration and strength of hydrogen peroxide.

____________ are chemical compounds that lighten hair by dispersing, dissolving, and decolorizing the natural hair pigment.

A coloring technique requiring two separate procedures in which the hair is pre-lightened before the depositing color is applied is:

______________ are traditional semipermanent, demipermanent, and permanent haircolor products that are used primarily on pre-lightened hair to achieve pale and delicate colors.