Can someone tell me why I am not to put EO's on my face neat (w/no carrier added). I really don't like the way my face feel's when I add a carried (oil) to my TTO, Lavender or Sweet Orange. I put about 3 drops (of any ONE, not all mixed together) on morning & night and its working VERY well. I would like to try Bergamont, but don't know if I need to worry about applying it neat either. Do I need to worry about long term usage of stright EO's, or a toxic build up?