Parker said one of the big differences is that niche perfumes don't use synthetics in their perfume oils, they work with all raw, natural ingredients.

Withholding synthetic ingredients allows the niche perfumes to have different notes, which are layers of different scents subtly released over time.

— The manager of a new perfume store located in my own beach town, Rehoboth, Delaware, quoted in Find a perfume that makes scents.