It’s not easy or pretty to occlude EMLA on the upper lip or eyebrow. You do not want to get the stuff in your eyes or mouth, so be careful.
L.M.X. (Ela-max) does not need occlusion.
You can view good information that I won’t have to repeat here on: http://www.hairfacts.com/tips/pain/emla.html
However, some things are worth repeating:
I tell my EMLA clients to wash the area with a very mild soap like Purpose. Harsh soaps strip the skin’s natural oils and it is these natural oils that help the medicine to penetrate the tough, top layer of skin to get deeper into the lower layer of skin where the nerve bundles are located around each hair follicle. Hold a clean, very warm washcloth to the skin for several minutes before applying a thick layer of either. (Rubbing in a thin layer before putting on the thick layer is helpful.) Lay a sheet of plastic wrap over the area and tape with scotch tape or some hypoallergenic tape if you have sensitive skin. Just do the best you can. It will feel awkward and look goofy, but hey!
Lastly, the electrologist SHOULD NOT wipe the area with alcohol products prior to treatment as the alcohol can interfer with and lessen the numbing effects. All that is needed is a kleenex to wipe the cream away before working on an area.
Let us know how effective these topicals are for you. If your electrologist can adjust timing and intensity on her epilator, perhaps you won’t need to bother with an anesthetic. Many clients become acclimatized after a few sessions and tolerate treatments pretty well.