Basics of Chemistry
In what pH range is skin and hair?
4.5 to 5.5
What are the two types of current?
Alternating Current (AC) and Direct Current (DC)
What do you call three-strand underbraids performed in small, often parallel, sections?
Cornrows
What is the highest level of haircolor?
10 (Although some lines have a level 12)
What term refers to the number of hair follicles per square inch of the head?
Density
What is created when amino acids join together in chains?
Proteins
What are the two common sources of electrical current?
Generators and Batteries
Invisible Braid
Complementary Colors
What is the process of reducing the hair's existing texture such as straightening curly hair called?
Relaxing
Amino acids that create proteins are linked together end-to-end by...
Peptide Bonds
What is an ampere?
A unit of electrical strength
In long hair design, what does the placement of volume or mass create?
What type of colors are created by mixing two primary colors in varying proportions?
Secondary
Natural oils thaat are removed during the chemical relaxing process are replaced by:
Applying a conditioning treatment
A pH of 5 is how many more times acidic than a pH of 6?
10
What do you call it when an electrical appliance (ex: a blow dryer) is activated by the flow of electric current?
Load
What determines the direction of the form in long hair design?
Position of Shapes
Demi-permanent colors are not designed to...
Lift existing natural hair color
What should be performed during a relaxer service to determine if additional smoothing is required?
Relaxation Test
What do carbon, nitrogen, oxygen, and hydrogen form the basis of?
Amino Acids
What do you call it when too many appliances are put on one circuit and are operated all at the same time?
When planning a well-balanced long hair design, you should consider the proportional relationships between size, shape, texture, and...
Color
The degree of lightness or darkness of a color is known as...
Color level or value
What four things should you assess in a pre-perm analysis?
Porosity, Elasticity, Texture, Density