Ch 20 Vocab Flashcards
compounds made of carbon,, oxygen, hydrogen, nitrogen, and sulfur (COHNS)
amino acids
aka protective bae cream; oily cream used to protect the skin and scalp during hair relaxing
base cream
relaxers that require application of protective base cream to the entire scalp prior to the application of the relaxer
base relaxers
a process/ service that rearranges the structure of curly hair into a straighter or smoother form
chemical hair relaxing
hair service that cause a chemical change that alters the natural wave pattern of the hair
chemical texture services
strong chemical side bonds formed when the sulfur atoms in 2 adjacent polypeptide protein chains are joined together
disulfide bonds
weak physical side bonds that are also a result of an attraction between opposite electrical charges; broken by wat and heat and reform as hair dries or cools
hydrogen bonds
an acid-alkali neutralization reaction that neutralizes the alkaline residues left in the hair by a hydroxide relaxer and lowers the pH of the hair and scalp; doesn’t involve oxidation or rebuild the disulfide bonds
hydroxide neutralization
very strong alkalis with a pH over 13; the hydroxide ion is the active ingredient
hydroxide relaxers
long, coiled polypeptide chains
keratin proteins
process by which hydrogen relaxers permanently straighten hair they remove a sulfur atom from a disulfide bond and convert it into a lanthionine bond
lanionization
ionic compounds formed by a metal (Sodium, potassium, or lithium) which is combined with oxygen and hydrogen
metal hydroxide relaxers
relaxers that don’t require a protective base cream
no base relaxers
conditioners with an acidic pH that restore the hair’s natural pH before the final neutralizing shampoo
normalizing lotion
end bonds; chemical bonds that join amino acids together, end to end, in long chains to form polypeptide chains
peptide bonds
