Skin & Nail Science
This is the body’s largest organ.
What is the skin?
This outermost layer of the hair is made of overlapping, scale-like cells.
What is the cuticle?
This is the angle at which a subsection of hair is held away from the head while cutting
What is elevation?
Red, yellow, and blue make up this group of colors.
What are the primary colors?
In permanent waving, the diameter of this tool largely determines the size of the finished curl.
What is the perm rod?
Located beneath the skin at the nail’s base, this area produces the cells that form the nail plate.
What is the matrix?
This middle layer gives hair most of its strength, elasticity, and natural pigment.
What is the cortex?
This section of previously cut hair establishes the length used to cut the next subsection.
What is a guideline?
This color is used to neutralize unwanted orange tones.
What is blue?
This reducing agent is commonly associated with traditional alkaline permanent waves and thio relaxers.
What is ammonium thioglycolate?
Melanocytes are primarily found in this deepest layer of the epidermis.
What is the stratum germinativum, or basal layer?
This term describes the hair’s ability to absorb moisture, chemicals, and other liquids.
What is porosity?
A one-length or blunt haircut is generally cut at this degree of elevation.
What is zero degrees?
This term identifies how light or dark a haircolor is.
What is level?
After a thio permanent wave has processed and been rinsed, this product reforms the disulfide bonds into their new shape.
What is the neutralizer?
This technical term describes split or brittle nails with lengthwise ridges.
What is onychorrhexis?
This active growth phase of the hair cycle can last for several years.
What is the anagen phase?
Combing the hair away from its natural fall or away from the guideline to preserve length is called this.
What is overdirection?
This oxidizing agent is mixed with permanent haircolor and lightener to release oxygen.
What is hydrogen peroxide, or developer?
These two relaxer families are chemically incompatible and should never be used on the same previously treated hair.
What are thio relaxers and hydroxide relaxers?
This contagious fungal infection is commonly known as athlete’s foot.
What is tinea pedis?
Permanent waving, chemical relaxing, and curl reformation affect this strong side bond in the hair.
What is a disulfide bond?
These lines create movement and are commonly used to blend longer and shorter areas in a haircut.
What are diagonal lines?
Before taking very light or highly porous hair much darker, the cosmetologist may restore missing warm pigment through this process.
What is filling, or repigmentation?
This service first relaxes overly curly hair and then wraps it on rods to create a larger curl pattern.
What is curl reformation, or a soft-curl permanent?