Hair Structure
Bonds broken by water
Hydrogen Bonds
Perm rods that have a smaller diameter in the center that increases to a larger diameter on the ends
concave rods
relaxers that requires the application of a base
base relaxers
Predominate tone of a color
base color
System for understanding color relationships
law of color
Bonds broken by a change in pH
Salt Bonds
Perm wrap in which the hair strands are wrapped from the ends to the scalp in overlapping concentric layers
croquinole perm wrap
Active ingredient or reducing agent in alkaline permanents
ammonium thioglycolate
equalize porosity and deposit color in one application
color filler
visible line separating colored hair from new growth
line of demarcation
Bonds broken by chemicals
Disulfied bonds
Also known as free form painting, painting a lightener directly onto clean, styled hair
baliage
Main active ingredient in true acid and acid-balanced waving lotions
glyceryl monothioglycolate
Also known as progressive haircolors
metallic dyes
Also known as a predisposition test
patch test
bonds broken by depilatories
Peptide bonds
lightening technique that involves pulling clean, dry strands of hair through a perforated cap with a thin plastic or metal hook.
cap technique
contain small, uncolored dyes that combine with hydrogen peroxide to form larger, permanent dye molecules within the cortex
aniline derivatives
system that colorists use to determine the lightness or darkness of the hair
level system
Another name for reverse highlighting
lowlighting
Compounds made up of carbon, oxygen, hydrogen, nitrogen, and sulfur
Amino acids
Also known as two-step coloring
double process application
combination of equal parts of a prepared permanent color mixture and shampoo.
soap cap
Also known as vegetable haircolors
natural haircolors
Primary Colors
Blue, Red, Yellow
Layer of the hair shaft that is responsible for the hair's strength and color
cortex layer
process of treating gray or very resistant hair to allow for better penetration
pre-softening
A non-ammonia color that adds shine and tone to the hair
glaze
Also known as the undertone
contributing pigment
Also known as oxidizing agent or catalysts
developers