Chapter 20 Chemical Texture Service Flashcards
Mid-strength relaxers are formulated for…
Fine, color-treated, or damaged hair.
Japanese thermal straightening…
is sometimes called thermal reconditioning.
When rinsing the hair after the recommended processing time has elapsed, it is recommended that you…
Smell the hair to determine if it still smells like perming solution.
What is the most common neutralizer?
Hydrogen Peroxide
Which type of perm is recommended for extremally porous hair?
True acid waves
An endothermic chemical reaction is one that absorbs _____ from its surroundings.
Heat
Which of the following is not considered a main component of an exothermic wave?
Concentrator
Most of the acid waves found in today’s salons have a pH between
7.8 and 8.2
A pH of 7.0 is ____ than the pH of hair.
100 times more alkaline
Manufacturers add an alkalizing agent to waving solutions because the acid in the solutions…
does not swell the hair or penetrate into the cortex.
The reducing agent used in permanent waving solutions is commonly referred to as
Thio
Hydrogen bonds can be broken by
either water or heat
The process by which hydroxide relaxers permanently straighten hair is called…
Lanthionization
Long chains of amino acids joined together by peptide bonds are known as…
Polypeptide chains
Which of these stops that action of the waving solution and rebuilds the hair into its new curly form?
Thio neutralization
A _______ is a type of wrap in which the hair is wrapped on one rod from the scalp to midway down the hair shaft, and another rod is used to wrap the remaining hair strand in the same direction.
Piggyback wrap
Which of these terms refers to the position of the rod in relation to its base section?
Base placement
The _______ is the tough exterior layer of the hair.
Cuticle
Which of these terms refers to the thickness of thinness of a liquid?
Viscosity
Which of these are usually classified as a lye-based relaxer?
Sodium Hydroxide Relaxers
A __________ is a wrapping pattern in which all the rods within a panel move in the same direction and are positioned on equal-sized bases.
Basic permanent wrap
A ______ is a type of wrap that uses one end paper folded in half over the hair ends like an envelope.
Bookend wrap
Which of these terms refers to the angle at which the rod is positioned on the head: horizontally, vertically, or diagonally?
Base Direction
The middle layer of the hair is the…
Cortex
Which type of relaxer requires the application of a protective base cream to the entire scalp prior to the application of the relaxer?
Base relaxer
Which of the following is a method of hair straightening that combines the use of a thio relaxer with flat ironing?
Japanese thermal straightening
A _______ is a type of perm wrap in which the hair is wrapped at an angle other than perpendicular to the length of the rod.
Spiral perm wrap
The chemical bonds that join amino acids together are called…
peptide bonds.
The partings and base radiate throughout the panels to follow the curvature of the head in which type of wrap?
Curvature permanent wrap
The _____ is the innermost layer of the hair.
Medulla
