Pre-owned by me and used only a handful of times, “I Don’t Know What” is an eau de parfum that is also a perfume/oil enhancer. Retails for $75. Details: A fragrance enhancer with transparent radiance that gives any perfume a certain, as the French say, “I don’t know what.” TOP NOTES bergamot essence HEART NOTES iso e super vetiver acetate BASE NOTES civettone firsantol ambrox super