review #3 Flashcards
what is the first and most important preliminary step in perming
consultation
how are salt bonds broken down
pH
how are disulfide bonds broken down
waving solution
how are hydrogen bonds broken down
water
How does the porosity of the hair relate to perming?
-coarse, resistant hair requires a highly alkaline chemical solution.
-porous, damaged or chemically treated hair requires a less alkaline solution
what purpose do the cuticle scales play in perming
to allow the solution to enter the cortex
the _____ bonds make perming possible, we must break down ___% in ensure longevity in the perm
disulfide
50
what layer of the hair does the actual perming take place
cortex
what it the most important factor to consider when choosing the right solution
porosity
what are the main active ingredient in the following:
alkaline waves
acid waves
neutralizer
alkaline waves- ATG
acid waves- GMTG
neutralizer- hydrogen peroxide
what is the pH of true acid waves
4.5-7.0
what is the pH of alkaline wave
9.0-9.6
what is the pH of acid balanced or neutral
7.8-8.2
what is the pH of neutralizer
3
what are the 2 main functions of neutralizer
- Any waving solution that remains in the hair is deactivated
- disulfide bonds that were broken by the waving solution are now rebuilt