Um, dh has lots of these. I was advised by our doctor (live mainland Europe) to clean, tie strong cotton thread around base very tightly, leave well alone until they drop off (they turn black - it takes 2 or 3 days).
The only thing to watch for is to tie the loop just right so you pull it tight right at BASE of skin tag (more difficult to do than you might imagine). Otherwise you end up leaving a little lump ....
I'm starting to quite enjoy our ritual now ...rubs hands .... cackles maniacally ...