Skin tags are small, soft growths that hang off the skin, and while they’re harmless, they tend to multiply over time. You can’t guarantee you’ll never get one, but the most effective prevention targets the two main triggers: insulin resistance and friction. Understanding what drives skin tag formation puts you in a much better position to slow or reduce their appearance.
Why Skin Tags Form in the First Place
Skin tags develop when skin cells called keratinocytes and the connective tissue cells beneath them (fibroblasts) start multiplying faster than normal. The biggest driver of this overgrowth is high insulin levels. When your body produces excess insulin, it activates growth factor receptors on the surface of skin cells, essentially telling them to keep dividing. Insulin is not the only factor, but research published in the Anais Brasileiros de Dermatologia identifies it as the single most important mediator in skin tag formation.
Friction plays a supporting role. Skin tags cluster in areas where skin rubs against skin or clothing: the neck, armpits, under the breasts, groin folds, and eyelids. The combination of metabolic triggers and repeated mechanical irritation creates the perfect conditions for these growths to appear.
Manage Your Blood Sugar and Weight
Because insulin is the primary biological driver, keeping your blood sugar and insulin levels in a healthy range is the most impactful thing you can do. The connection is strong: in a cross-sectional study from South India, 61% of people with skin tags had elevated fasting blood sugar, compared to just 26% of people without them. Twice as many people with skin tags had diabetes compared to the control group.
Weight matters too. In the same study, 54% of people with skin tags were overweight or obese, versus 37% of those without. Carrying extra weight increases insulin resistance, which raises insulin levels, which stimulates skin cell overgrowth. Even modest weight loss can improve insulin sensitivity significantly.
The practical steps here overlap with general metabolic health advice:
- Reduce refined carbohydrates and added sugars. These foods spike blood sugar and force your body to produce more insulin. Replacing them with whole grains, vegetables, and protein helps keep insulin levels steadier throughout the day.
- Stay physically active. Regular exercise, even brisk walking, improves your cells’ ability to respond to insulin so your body doesn’t need to produce as much.
- Maintain a healthy weight. Losing even 5 to 10% of your body weight can meaningfully reduce insulin resistance if you’re currently overweight.
If you’re noticing a sudden crop of new skin tags, it’s worth checking your fasting blood sugar. Skin tags can be an early visible signal that your metabolism is shifting toward insulin resistance, sometimes before other symptoms appear.
Reduce Friction on Your Skin
Skin-on-skin rubbing and rough fabrics create the kind of repeated irritation that encourages skin tags in vulnerable areas. You can’t eliminate friction entirely, but you can reduce it in the spots where tags are most common.
Clothing fabric makes a real difference. Natural fibers like cotton, linen, silk, and hemp are breathable, moisture-wicking, and cause less chafing than synthetics. Polyester, nylon, and acrylic trap heat, hold moisture against the skin, and generate more friction with movement. If you’re prone to skin tags on your neck or underarms, switching to softer, looser-fitting tops can help. Avoid rough hems, stiff collars, and heavy synthetic blends in areas where your skin is already irritated.
For areas where skin folds rub together, like the groin, under the breasts, or inner thighs, anti-chafing balms or powders create a barrier that reduces friction. Moisture-wicking undergarments made from cotton or bamboo blends keep these areas drier, which also cuts down on irritation. Jewelry is another overlooked source of friction. Necklaces that shift back and forth across the neck all day can contribute to tag formation in that area.
New clothing is worth washing before you wear it. Chemicals from textile manufacturing and dust from storage can irritate the skin and add to the problem.
Hormonal Changes You Can’t Fully Control
Pregnancy is a well-known trigger for new skin tags. Estrogen receptors on pigment and skin cells respond to the surge of hormones during pregnancy, and many women notice new tags appearing, particularly in the second and third trimesters. Birth control pills can produce similar effects on a smaller scale. These hormonally driven tags sometimes shrink or fall off after delivery or after stopping hormonal contraception, though not always.
You can’t realistically prevent hormone-related skin tags during pregnancy, but knowing the connection helps you avoid unnecessary worry. Most pregnancy-related skin changes are benign and temporary.
Age, Genetics, and What You Can’t Change
Skin tags become increasingly common with age. They’re most prevalent after age 60, with one study showing 32% of skin tag patients falling in that age group, followed by the 40 to 59 range. The reasons are partly metabolic (insulin resistance tends to worsen with age) and partly cumulative (decades of friction in the same spots).
Genetics also play a role. Researchers have identified mutations in growth-signaling genes that appear frequently in skin tag tissue. If your parents or siblings develop skin tags easily, you likely have a lower threshold for developing them yourself. This doesn’t mean prevention is pointless. It means the metabolic and friction strategies matter even more for you, because your skin cells are already primed to respond to those triggers.
What Prevention Realistically Looks Like
There’s no cream, supplement, or product that prevents skin tags outright. The strategies that work are the same ones that improve your overall metabolic health: stable blood sugar, healthy weight, regular movement, and reducing chronic skin irritation. These won’t eliminate skin tags completely, especially if you have a genetic tendency toward them, but they can meaningfully slow down how many new ones appear and how quickly.
If you already have skin tags you want removed, a dermatologist can clip, freeze, or cauterize them in a quick office visit. Removal doesn’t prevent new ones from forming, though, which is why addressing the underlying triggers is the more lasting approach. People who lose weight or bring insulin resistance under control often notice that new tags stop appearing, even if existing ones remain.