I found this info for you on netdoctor.com hope it helps
They are easily removed under local anaesthetic by diathermy and the local anaesthetic can even be given in the form of EMLA cream without the need for any injection. Another method your GP can show you how to use is simply tying a cotton around the base of the skin tag to cut of it's tiny blood supply so that the skin tag will simply fall off within a few days without any further need for treatment. You would however need to abstain from anything that rubs the skin until this happens.
There are no currently medically approved creams for the removal of skin tags. Skin tags are removed usually by physical methods like cutting off or tying off with dental floss. It is not advisable to use unapproved products like Dermasil, wart removers, essential oils, nail polish, toothpaste, or hair-removal creams like Neat or Nair. Trial uses of unapproved creams may cause irritation and possible secondary complications.