Epi what?

Several months ago, 3 to be exact, I asked my derm to "zap" (technical, huh?) some skin tags. She decided to freeze 'em with liquid Nitrogen instead. No muss, no fuss. Plus she could do some of the hyperplastic mole-looking things that weren't pigmented enough, or big enough, to remove and send off for testing (mandatory). I ended up looking like I had chicken pox. Now it just looks like I'm spotted. No more skin tags (the other things are still there) but in it's place are little dots of hyperpigmentation. Like 20 of 'em.
I complained. Twice. Now I'm trying an expensive prescription cream called Epiquin. It has a base of hydroquinone so you can't use it indefinately.
It's made by SkinMedica's companies.
Fingers crossed.
Decided to spot try it on some areas of facial melasma.