What is the technical term for gray hair?

A substance, usually liquid, that dissolves another substance to form a solution is a(n) _____.

What term refers to an infestation of the hair and scalp with head lice?

A substance, usually liquid, that dissolves another substance to form a solution is a(n) _____.

Hydroxide chemical relaxers break disulfide bonds and convert them to _____ bonds.

What unit measures the resistance of an electric current?

Vellus hair is also known as _____ hair.

What pigment in hair provides natural colors ranging from red and ginger to yellow and blond tones?

The chemical combination of two or more atoms of different elements produces a(n) _____.

Case studies analyze real world problems.