| http://www.w3.org/ns/prov#value | - Therefore, quaternary ammonium compounds generally are not a component in shampoo-conditioner compositions or anionic dye-basedcompositions, but are applied to the hair from a separate conditioning composition.The water-soluble quaternary ammonium compounds have the general structural formula: ##STR1## wherein R.sub.1 is an alkyl group including from about 8 to about 18 carbon atoms; R.sub.2 is se
|
