In terms of performance, what is the difference between flavor oils and flavor fragrances?
Flavor oils have taste and smell. The flavor is a natural taste that is most often improved with the addition of a sweetener. Flavor fragrances have a strong aroma and no flavor. You should always add a sweetener to flavor fragrances. Your nose will smell the aroma and the mouth will taste the sweetness in the lip base. Together this tricks the brain into thinking it is tasting the aroma.