A physical side bond that is easily broken by water and heat is a:

The special device that prevents excessive current from passing through a circuit is a(n):

The substance secreted by the sebaceous glands is called:

Hair flowing in the same direction, the result of follicles sloping in the same direction form a:

Eumelanin provides natural colors ranging from red and ginger to yellow and blond tones.

The negative or positive pole of an electric current is referred to as the:

There are 60 naturally occurring elements, each with its own distinct physical and chemical properties.

A measurement of how much electricity is being used in 1 second is a(n):

The cortex layer of the hair structure is responsible for the hair’s length and texture.

In the croquignole method of wrapping, the hair is wound from: