Milday Ch. 21 Hair color

DEVELOPERS

when mixed with an oxidation haircolor, supplies the necessary oxygen gas to develop color molecules and create a change in hair color

HAIR COLOR

the natural color of hair

LINE OF Demarcation

visible line separating colored hair from new growth

VIRGIN APPLICATION

first time the hair is colored

METALLIC HAIRCOLORS

haircolors containing metal salts that change hair color gradually by progressive buildup and exposure to air creating a dull, metallic appearance

Warm Strand

hair at scalp that processes faster

OXIDIZING AGENTS

substance that releases oxygen

ANILINE DERIVATIVES

contain small, uncolored dyes that combine with hydrogen peroxide to form larger, permanent dye molecules within the cortex

SOAP CAP

combination of equal parts of prepared tint and shampoo applied to the hair like a regular shampoo

NATURAL HAIR COLOR

colors obtained from the leaves or bark of plants

LEVEL SYSTEM

system that colorists use to determine the lightness or darkness of a hair color

COMPLEMENTARY COLOR

colors opposite each other on the color wheel. Mixing complementary colors will produce gray

HIGHLIGHTING

coloring some of the hair stands lighter than the natural color

OXIDATIVE HAIR COLOR

creates a permanent hair color change by altering the chemical composition of the hair through a chemical process called oxidative

OIL BLEACH

may be used to presoften resistant hair

CATALYSTS

substance that speeds up a chemical reaction but is not used up itself or permanently changed

LAW OF COLOR

system for understanding color relationships - all color comes from 3 primary colors.

HIGHLIGHTING SHAMPOO

colors prepared by combining permanent haircolor, hydrogen peroxide, and shampoo

NON-OXIDATIVE HAIR COLOR

creates a physical change to haircolor without altering the chemical composition of the hair

REVERSE HIGHLIGHTING

technique used to color strands of hair darker than the natural also known as low lighting

ACTIVATORS

chemicals that must bind for the enzyme to be active

POWDER BLEACH

bleach product is usually applied to dry hair

CREAM BLEACH

strong enough for high lift bonding

DYE PRECURORS

oxidized by hydrogen peroxide to active intermediates

Patch test

predisposition test. Used to identify a possible allergy in a client.

Primary Colors

Red, yellow & blue

slicing technique

technique of taking a narrow 1/8 inch section of hair making a straight part and positioning the hair over a foil and applying lightener or color.

Weaving technique

taking a narrow 1/8 inch of hair in a zigzag motion and applying lightener or color over a foil

Strand text

determines how the hair will react to the color formula and how long the formula should be left on the hair

tone

hue

Baliage

free form technique; painting a lightener on dry styled hair

base color

predominant tone of color

level system is 1 - 10

1 is black and 10 is blonde

new growth

part of the hair shaft between the scalp and the hair that has been previously colored.

glaze

a non-ammonia color that adds shine and tone to the hair

level

unit of measurement used to identify the lightness or darkness of a color