Perfume Oils
Closer to the skin and longer on it. Rolls on rather than sprays, so you wear it where you put it - wrists, neck, behind the ears. No alcohol bite. The scent is for you and whoever's near you, not the whole room.
Eau de Parfum
Sprays, projects, fills the room you walk into. Wears the way most perfume wears, but at higher concentration than designer fragrance, the scent stays present for hours rather than fading by lunch.