Skin tags in the armpit are harmless, but they can snag on clothing and become irritating. The fastest way to remove them is a quick in-office procedure with a dermatologist, which typically heals within a few days. You also have at-home options, though they come with more risk and less reliability.
Why Skin Tags Form in the Armpit
Skin tags grow where skin rubs against skin or clothing, which is why the armpit is one of the most common spots. The constant friction triggers a small overgrowth of skin cells, creating a soft, flesh-colored nub that hangs from a thin stalk. They’re not cancerous and don’t become cancerous.
Friction isn’t the only factor. High insulin levels stimulate skin cell growth by triggering receptors that make certain cells multiply faster than normal. This is why skin tags are significantly more common in people with insulin resistance, prediabetes, or type 2 diabetes. If you’re suddenly noticing multiple skin tags, it may be worth having your blood sugar checked. Pregnancy and weight gain can also increase your likelihood of developing them, since both raise insulin levels and create more skin-on-skin contact.
Professional Removal Options
A dermatologist can remove an armpit skin tag in minutes using one of three common methods. The choice usually depends on the size and number of tags.
Snip excision is the most straightforward approach. The doctor numbs the area and cuts the tag off at its base with surgical scissors or a scalpel. It’s quick, and you walk out with the tag gone.
Cryotherapy uses liquid nitrogen applied with a cotton swab or spray device. The extreme cold freezes the skin tag, destroying the cells. The tissue then blisters and falls off over the next week or so. According to the American Society for Dermatologic Surgery, the technique works by freezing the skin quickly and allowing it to thaw slowly, which maximizes destruction of the targeted cells. Sometimes a second application is needed.
Cauterization burns the tag off using heat or an electric current. This method has the advantage of sealing the wound as it works, which reduces bleeding.
Recovery from all three methods is minimal. Most people heal within a few days with no significant scarring. You’ll typically leave with a small bandage and no special aftercare instructions beyond keeping the area clean.
What About Insurance?
Most health insurance plans consider skin tag removal a cosmetic procedure and won’t cover it. If you want a tag removed simply because it bothers you visually, expect to pay out of pocket. However, if a skin tag is infected, bleeding, or causing persistent irritation from friction, some insurers will cover the removal. It’s worth calling your plan before scheduling to ask whether your specific situation qualifies.
Over-the-Counter Removal Kits
If you’d rather try removing a small skin tag at home, ligation kits are the most common OTC option. These kits include tiny rubber bands that you place around the base of the skin tag to cut off its blood supply. Without circulation, the tag shrivels and falls off on its own, usually within a week or two. They work best on tags with a clearly visible, narrow stalk.
Freeze-off products designed for warts are sometimes marketed for skin tags as well. These use a much milder cold than medical-grade liquid nitrogen, so they’re less effective and may require multiple applications.
You’ll also see tea tree oil and apple cider vinegar recommended online. Harvard Health notes there’s little research supporting the effectiveness of either one. Both frequently cause skin irritation, and tea tree oil in particular is known to trigger allergic reactions in some people. The armpit, with its thin skin and constant moisture, is an especially poor location to experiment with irritating substances.
Why You Shouldn’t Cut Them Off Yourself
It’s tempting to grab a pair of scissors, but skin tags have their own blood supply and sometimes contain nerves. UCLA Health warns that cutting them off at home can lead to uncontrolled bleeding and significant pain. The armpit is a warm, moist environment where bacteria thrive, so any open wound there carries a real infection risk. You’re also more likely to leave behind part of the stalk, which can regrow or scar.
Telling a Skin Tag From Something Else
Before you try to remove a growth, make sure it’s actually a skin tag. Skin tags are soft, flesh-colored or slightly darker, and dangle from a thin stalk. They’re usually just a few millimeters across. A mole, by contrast, is flat or slightly raised, round, and often darker brown. A wart tends to be rough-textured, firm, and flush with the skin surface rather than hanging off it. If a growth in your armpit is hard, rapidly changing in size or color, or painful without being tugged on, have a dermatologist look at it before attempting any removal.
Preventing New Skin Tags
Removing a skin tag doesn’t stop new ones from forming nearby if the underlying causes remain. The two most effective prevention strategies target the root triggers: friction and insulin levels.
Reducing friction in the armpit means keeping the area dry, wearing smooth-fitting clothing that doesn’t bunch, and maintaining a healthy weight to minimize skin folds. Moisture-wicking fabrics help, as do powders that reduce skin-on-skin contact.
If your skin tags are linked to insulin resistance, stabilizing your blood sugar can slow or stop new growth. Some people find that once their insulin levels are better controlled through diet changes, exercise, or medication, skin tags stop recurring altogether. This can be a more sustainable solution than repeatedly removing individual tags.