Review Flashcards

In electricity, which term describes the unit of measurement for electrical pressure or force?

Answer: Volt

Voltage (measured in volts) is the electrical pressure that drives current through a circuit.

The galvanic current technique used to soften and emulsify sebum and debris in the follicle is called:

Answer: Desincrustation

Desincrustation uses the negative pole of galvanic current with an alkaline solution to deep-cleanse and soften follicle debris.

Which federal agency regulates the safety of cosmetic products sold in the United States?

Answer: FDA

The Food and Drug Administration (FDA) oversees the safety and labeling of cosmetic products in the U.S.

When neutralizing a perm, the neutralizer's primary chemical action is:

Answer: Rebuilding disulfide bonds through oxidation

The neutralizer (typically hydrogen peroxide) oxidizes the broken sulfur bonds, re-linking them in the hair's new curled shape.

A client asks about a hairline that grows in a circular pattern at the crown. This is called a:

Answer: Whorl

A whorl is a growth pattern where hair radiates outward from a central point in a circular or spiral pattern.

Which ingredient in nail polish is classified as a potential sensitizer and is being phased out by many manufacturers?

Answer: Tosylamide/formaldehyde resin

Tosylamide/formaldehyde resin is a common sensitizer in nail polish that can cause allergic reactions and is being removed from many formulas.

The term 'porosity' in haircare refers to the hair's ability to:

Answer: Absorb and retain moisture

Hair porosity describes how readily the hair's cuticle layer allows moisture and chemicals to enter and be retained.