Category: H

The part of the hair located below the surface of the epidermis.  

Method of temporarily straightening extremely curly or unruly hair by means of a heated iron or comb.  

Chemical process involving the diffusion of the natural hair color pigment or artificial hair color from the hair.  

Hair additions that are secured to the base of the client’s natural hair in order to add length, volume, texture, or color.  

Ability of the hair to stretch and return to its original length without breaking.  

The number of individual hair strands on 2.5 cm² (1 square inch) of scalp.  

Outermost layer of hair; consisting of a single, overlapping layer of transparent, scale-like cells that look like shingles on a roof.  

The natural color of hair.  

Chopping movement performed with the edges of the hands in massage.  

Individuals who consume five or more drinks on one occasion, five or more times in a 30-day period.