In permanent waving, the shape and type of curl are determined by the shape and type of rod and the _____.

Overprocessed hair that is further processed will become _____ and cause further damage, including breakage.

_____, often found in home haircoloring products, leave a coating on the hair that may cause uneven curls, severe discoloration, or hair breakage.

_____ refers to the position of the rod in relation to its base section and is determined by the angle at which the hair is wrapped.

_____, also known as circle rods, are usually about 12 inches (30.5 centimeters) long with a uniform diameter along the entire length of the rod, and are secured by fastening the ends together to form a loop.

Which conditioner contains an acidic pH that restores the hair’s natural pH and should be used after a hydroxide relaxer?

In the restructuring process, coarse, resistant hair with a strong compact cuticle requires a chemical solution that is _____.

_____ combines the use of a thio relaxer with flat ironing.

The _____ measures the acidity and alkalinity of a substance by measuring the quantity of hydrogen ions it contains.

Relaxers that contain two components and must be mixed immediately prior to use are _____.