Mrs. Homegrown here:
Hallelujah! Last night, our friend Oscar (genius man!) told us how to deal with the dreaded, pernicious, invisible prickly pear fruit stickers (glochids) which somehow end up embedded in my hands every time Erik brings one of those fruits in the house. The answer? Pumice stone. It’s so simple. Just rub the site with a pumice stone. I think it just shaves off the top part of the stickler, and then lower part works its way out eventually, I suppose. But the important part is that the top part isn’t moving anymore, which means no more pain.
I’ve tried it–it really works.
Happy, happy, happy!
ETA: A round-up of alternate suggestions from the comments: you can also try spreading white glue (PVA/Elmer’s) over the area and pulling up the “skin.” Other people do something similar with rubber cement. Or you can try duct tape. None of these worked as well for me as pumice, but everyone is different.