You might think that the difference between “perfume” and “cologne” is who the bottle is intended for, or which counter it’s sold at—the reality is a little more subtle than that. Simply, all fragrances are largely the same, but they’re given a name based on the concentration of oil in alcohol and water.
Perfume types reflect the concentration of aromatic compounds in a solvent, which in fine fragrance is typically ethanol or a mix of water and ethanol. Various sources differ considerably in the definitions of perfume types. The intensity and longevity of a perfume is based on the concentration, intensity and longevity of the aromatic compounds, or