Properties of Hair
the number of individual hair strands on 1 square inch of scalp.
Density -
- naturally resistant to being penetrated by moisture.
Hydrophobic
relaxers that require the application of protective base cream to the entire scalp prior to the application of the relaxer.
Base relaxers -
perms that use an ingredient that does not evaporate as readily as ammonia so there is very little odor associated with their use.
Ammonia-free waves -
Smaller sections within a larger section of the hair, used to maintain control of the hair while cutting.
Subsection:
ability of the hair to stretch and return to its original length without breaking.
Elasticity
building blocks of protiens which are the main components of hair skin and nails
Amino Acids
use the same ammonium thioglycolate (ATG) that is used in permanent waving but at a higher concentration and a higher pH.
Thio relaxers
also known as cold waves, they have a pH between 9.0 and 9.6 use ammonium thioglycolate as a reducing agent and process at room temperature without the addition of heat.
Alkaline waves -
Attracts water
Hydrophilic:
thickness or diameter of the individual hair strand.
Texture
strong chemical side bonds formed when the sulfur atoms in two adjacent protein chains are joined together.
Disulfide bonds -
process by which hydroxide relaxers permanently straighten hair, they remove a sulfur atom from a disulfide bond and convert it into a lanthionine bond.
Lanthionization -
main active ingredient in true acid and acid balanced waving lotions.
Glyceryl monothioglycolate -
listening to the client and then repeating. In your own words, what the client is telling you.
Reflective Listening -
ability of the hair to absorb moisture.
Porosity
- a weak, physical, cross link side bond that is easily broken by water or heat.
Hydrogen bonds -
- very strong alkalis with a pH over 13; Sodium hydroxide is the active ingredient (lye)
Hydroxide relaxers
a colorless liquid or white crystals with a strong unpleasant odor that is used in permanent waving solutions.
Thioglycolic acid -
Hair flowing in the same direction.
Hair Stream:
Hair Stream - hair flowing in the same direction, resulting from follicles sloping in the same direction.
Hair Stream
- long, coiled polypeptide chains.
Keratin proteins
a thio based chemical that reformats curly and wavy hair into looser and larger curls and waves.
Soft curl permanent -
- perm that uses an ingredient other than ATG as the primary reducing agent such as cysteamine or mercaptamine.
Thio-free waves
Creates length and width in the opposite direction.
Overdirection: