Skin tag remedies?

In the armpit area

visit your gp and they will book you in to have them removed.

i think they cut them off.

If it's dangly enough, tie a piece of fine (sewing) thread around it a few times and knot as tight as you can. The tag will go black and drop off.

Otherwise go to a dermatolgist who will shave it off with a blade.

Tags are cause by fluctuations in hormones and there is no way that i know off to prevent their occurence.