Chapter 20 B Flashcards
What process permanently rearranges the basic structure of curly hair into a straight or smoother form?
Chemical hair relaxing
The most common type of chemical hair relaxes are ammonium Thio, guanidine hydroxide and what else?
Sodium hydroxide
The measurement of the thickness or thinness do a liquid that affects how the fluid flows is known as what?
Viscosity
Before giving a relaxing treatment to curly hair, the cosmetologist must perform an analysis of the clients hair and scalp testing for porosity and what else?
Elasticity
What is the process by which hydroxide relaxers permanently straighten hair, the relaxers remove a sulfur atom from a disulfide bond and convert it into a lanthionine bond?
Lanthionization
Relaxers that are ionic compounds formed by metal combined with oxygen and hydrogen are known as
Metal hydroxide relaxers
Sodium hydroxide are commonly called
Lye relaxers
The acting n of a guanadine hydroxide or no lye relaxer causes the hair to
Soften and swell
These types of relaxers are intended for use on color-treated,damaged, or fine hair.
Low pH
Hydroxide relaxers are usually sold in what types of formulas
Base and no base
The scalp and skin are protected from possible burns when using a base hair relaxer by applying what?
Base cream
Application of the relaxer for a retouch begins in the most resistant areas, usually at the back of the head or where?
Under the occipital bone
If using a no base relaxer a protective cream is applied to where?
To the hairline and around the ears
General guidelines suggest that for fun color treated or damage here which strength of relaxer should be used?
Mild
General guidelines suggest that for course extremely curly and resisting hear what strength should be used
Strong or super