Scientific Concepts Flashcards

What happens to the hair cuticle when exposed to an alkaline solution?

Answer: It swells and opens

Alkaline solutions cause the cuticle scales to swell and lift, making the hair more porous and susceptible to damage.

Which type of electricity flows in one direction only and is used in galvanic current treatments?

Answer: Direct current (DC)

Direct current flows in one continuous direction and is used in galvanic machines to introduce water-soluble substances into the skin.

What is the scientific term for the outermost layer of the skin?

Answer: Epidermis

The epidermis is the outermost protective layer of the skin, composed of five sublayers including the stratum corneum.

A client's hair has low porosity. What does this indicate about the cuticle?

Answer: The cuticle is tightly closed and resists moisture

Low porosity hair has a tightly sealed cuticle layer that resists water and chemical absorption.

What is the name of the protein that makes up approximately 90% of the hair shaft?

Answer: Keratin

Keratin is the fibrous structural protein that composes the majority of hair, nails, and the outer skin layer.

Which law of color states that all colors are created from three primary colors?

Answer: Law of color theory

The law of color theory establishes that red, yellow, and blue are the three primary colors from which all other colors are mixed.

What type of chemical reaction produces heat as a byproduct, such as during exothermic relaxer application?

Answer: Exothermic reaction

An exothermic reaction releases energy in the form of heat, which is why some relaxers feel warm during processing.