vocab
Tough exterior layer of the hair
cuticle
Chemical Bonds that join together to form poly peptide chains are ________bonds.
peptide bonds
The ___________ layer is the tough exterior layer of the hair. It surrounds the inner layers and ___________ the hair from damage.
Cuticle, protects
T/F The cuticle is directly involved in the texture or movement of the hair
false
The chemical textured service that loosens overly curly hair or changes tightly curly or coiled hair into loose curls or waves is
Curl re-forming
Middle layer of the hair
cortex
Keratin proteins are made of long chains of __________________ linked together end-to-end like beads.
Amino acids
Texture services can be used to ___________ straight hair, ___________ overly curly hair, or ___________ tightly coiled hair.
Curl, straighten, soften
T/F the cuticle is directly involved in the texture or movement of the hair
False
which type of bonds are relatively weak physical side bonds that are the results of an attraction between negative and positive electrical charges
salt bonds
Innermost layer of the hair
medulla
The chemical reaction of _________ breaks the disulfide bonds through a chemical reaction called reduction.
The waving solution
The ___________ is the middle layer of the hair, located directly beneath the ___________ layer.
Cortex, cuticle
T/F extremely curly hair grows in long twisted spirals or coils, with the thinnest and weakest sections of the hair strands located at there twists
True
for on base placements the hair is wrapped at______ beyond perpendicular to its base section and the rod is positioned on its base
45 degrees
relatively weak physical side bonds that are the result of an attraction between negative and positive electrical charges (ionic bonds)
salt bonds
________________ hair with a damaged cuticle layer is easily penetrated and could be further damaged by a highly alkaline permanent waving solution.
Porous
The cortex is responsible for the incredible ___________ and ___________ of human hair.
Strength, elasticity
T/F the neutralization of hydroxide relaxers involves oxidation
False
A____ is a type of wrap in which the hair us wrapped on one rod from the scalp to midway down the hair shaft and another rood is used to wrap the remaining hair strand in the same direction
Are easily broken by water (a wet set)
hydrogen bonds
What is the main active ingredient or reducing agent in alkaline perms?
Ammonium Thioglycolate
___________ the side bonds of the ___________ makes it possible to change the natural wave pattern of the hair.
Breaking, cortex
T/F permanents based on sulfites are very weak and do not provide firm curls especially on strong or resistant hair
True
manufacturers add alkaline agent to waving solution because the acid in the solution
does not swell or penetrate the cortex of the hair