For example, in an asymmetrical bob, the hair is aonger on one side than the other.

Typically, this phase lasts around 7 years in a healthy person.Īmmonia– The main ingredient found in hair color that opens the cuticle, allowing color molecules to enter.Īmmonium Thioglycolate– aka “Perm Salt.” This is a chemical compound (C 2H 7NO 2S) that works by swelling the hair and breaking down disulfide bonds, rendering the hair as “permable.”Īsymmetrical– Hair terminology meaning different lengths on both sides. It has a pH level of 7.5 to 9.5.Īlopecia– Hair loss, either naturally or from a disease.Īmino Acid– “The building blocks of hair.”Īnagen– The growing phase of the hair growth cycle. Acid Perm– A type of permanent wave that produces softer curls and has a pH level of 6.5 to 8.0.Īctivator– A chemical ingredient added to hair bleach to speed the process without creating extra damage.Īfro Hair– Hair terminology referring to a hairstyle made up of a mass of very tight curls surrounding the head.Ī-Line Bob– A type of bob that is longer in the front then it is in the back, resembling a capital “A.”Īlkaline Perm– A stronger, yet harsher type of perm solution used to create tight, firm curls.

Hair and eye color abbreviations