The colorless part of the hair
Cuticle
Hair is chemically _______
Alive
2 sulphers interact and create a permanent link to create
A covalent bond
This Paul Mitchell color line contains both oxidative and direct dyes
The Demi
Both Amonia and MEA are
Alkalizers
My function is unknown
Medula
Virgin hair is hair at its ________
Healthiest
Most prevalent type of bond in hair
Hydrogen
Requires a developer
Oxidative Dye
Hangs out in hair forever and is 80% more damaging
MEA
11-12
Melanina makes up what percentage of hair content?
1-2%
Strongest bond in the hair
Covalent or Disulfide
What you see is what you get
Direct Dye
Starts as a liquid in hair color and then evaporates & leaves the hair
Amonia
Melanin lives here
Cortex
___________ is exposed when lightening
Melanin
These bonds disolve when hair becomes wet
Electro static or salt bridges
Typically lives in the cuticle layer
Direct Dye
Amonia is unlikely to cause an allergic reaction for this reason
It is naturally occuring in our bodies
The medula is filled with this element
Nitrogen
The four main components of hair
Protien (Keratin), Lipids, Melanin, Trace minerals
Permanent hair color ruins these bonds
Disulfide or Covalent
6% hydrogen peroxide is the same as
20 Volume Developer
How much more MEA is needed for the same result as amonia
5 times as much