Final answer:
Demipermanent and permanent are the two classifications of non oxidative haircolor. Demipermanent haircolor can darken or enhance the natural color of the hair, while permanent haircolor can lighten or darken the hair permanently.
Step-by-step explanation:
Non oxidative haircolor includes two classifications: demipermanent and permanent. Demipermanent haircolor is a type of non oxidative haircolor that can darken the hair or enhance its natural color but cannot lighten the hair. It is a temporary haircolor that gradually washes out over time, typically lasting for about four to six weeks.
Permanent haircolor, on the other hand, can lighten or darken the hair permanently. It involves the use of chemical lighteners and oxidants to remove the natural pigment and replace it with synthetic color. Permanent haircolor alters the structure of the hair and remains until it is cut away.