Chapter 15 Relaxers

Front

Which chemical bonds, also known as end bonds, join amino acids together, end-to-end in long chains, to form a polypeptide chain?

Back

Peptide bonds

Front

What are long, coiled polypeptide chains linked together end-to-end like beads?

Back

Polypeptide chains

Front

The cortex of the hair is made up of millions of polypeptide chains cross-linked by three types of side bonds that are responsible for the elasticity and strength of the hair. These bonds are _____: disulfide, salt, and hydrogen, disulfide, trisulfide, and hydrogen, disulfide, salt, and oxygen, disulfide, chlorine, and hydrogen.

Back

disulfide, salt, and hydrogen

Front

What chemical side bonds are formed when two sulfur-type chains are joined together?

Back

Disulfide bonds

Front

Which bonds are relatively weak physical side bonds resulting from an attraction between negative and positive electrical charges, and are easily broken by changes in pH?

Back

Hydrogen bonds

Front

Hydrogen bonds are weak physical side bonds that result from an attraction between negative and positive electrical charges and are easily broken by water or heat, but reform as the hair is _____?

Back

dried

Front

Chemical services should not be performed if the scalp analysis shows any signs of _____: porosity, abrasions, disorders, tightness.

Back

abrasions

Front

Hair that has been treated with a hydroxide relaxer is unfit for _____ and will not hold a curl.

Back

permanent waving

Front

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

Back

Metallic salts

Front

What is the active ingredient in all hydroxide relaxers?

Back

Hydrogen ion