Skin cancers occur when skin cells undergo malignant transformations and grow into tumors. The most common types of skin cancer, basal cell carcinoma and squamous cell carcinoma, are highly curable when they are diagnosed and treated early. Sun exposure, tanning beds, depressed immune system, radiation exposure, and certain viral infections are risk factors for skin cancer. Skin cancers are treated with surgery or radiation. The prognosis of nonmelanoma skin cancers is generally very good.
Other skin conditions such as warts and moles can resemble skin tags. Since some moles may be cancerous, it’s best to have your skin tags examined by a doctor. Your dermatologist or family doctor will be able to diagnose skin tags. They’ll likely do this through a visual exam. If they have any doubt about the diagnosis, they may also perform a biopsy.
Treat with apple cider vinegar. Get a cotton ball and soak it in apple cider vinegar until it is totally saturated. Place the cotton ball on your skin tag and hold for a few minutes. You can move the ball in a circular motion on the skin to increase absorption if you like. Repeat this process three times per day until your skin tag falls off. This method is usually quite effective. Depending on your skin the vinegar may not be as effective so you can try using apple cider by itself. 
Some doctors said skin tags wouldn’t grow. Some told me they would keep growing. Most of them said they would increase in frequency as a person ages, and sure enough, what did I find over my eyelid the other day — a tiny little skin tag, just where the lid rubs against my brow. For cosmetic reasons, I’d consider getting that one removed, though the thought of liquid nitrogen on that thin skin makes me shudder, as do the aesthetics of a giant Band-Aid on my face for days.
My skin tags, of course — like the skin tags of millions of people — were fine. They didn’t irritate or bother me, though some doctors mentioned them getting twisted in necklace or irritated by rubbing on clothing. When that happens, or for cosmetic reasons, skin tags are easily removed. “There are several methods of removal — clip them with sharp scissors; freeze them with liquid nitrogen; or burn them off with heat,” meaning cauterize them, Dr. Besser says. (All of this should be performed by a medical professional, not at home.)
Aside from genetic predisposition, UV exposure causes most moles to develop. This provides you with the opportunity to minimize your risk of new moles by practicing healthy sun habits. Moles result from all UV exposure, not just from a sunburn or excessive time in the sun. To minimize the chance that sun damage will cause new moles – or skin cancer – to develop on your body use broad-spectrum sunscreen on a daily basis, and avoid indoor tanning.