Most heel blisters heal on their own within a few days if you remove the source of friction and protect the area. The fluid inside a blister is actually part of the healing process, cushioning the damaged skin underneath while a new layer forms. Your main job is to keep the blister clean, covered, and free from further rubbing while that new skin grows in.
Leave the Roof Intact When You Can
The single most important thing you can do for a heel blister is resist the urge to peel it open. That top layer of skin is a natural barrier against bacteria, and keeping it intact significantly lowers your risk of infection. The fluid inside will gradually reabsorb over a few days, and the blistered skin will eventually peel away on its own once the new layer beneath is ready.
There is one exception. If the blister is large, painful, or in a spot where it’s going to pop on its own from the pressure of walking, you’re better off draining it in a controlled way. Use a sterilized needle (wiped with rubbing alcohol), puncture the edge of the blister in one or two spots, and gently press the fluid out. Leave the overlying skin in place. It still serves as a protective cover for the raw skin underneath, even once the fluid is gone. After draining, clean the area and apply a bandage.
Choose the Right Bandage
What you cover your blister with matters more than you might think. Standard adhesive bandages work in a pinch, but hydrocolloid blister plasters (the thick, gel-like patches sold specifically for blisters) outperform them in nearly every measure. In a comparative study of over 300 participants, hydrocolloid plasters provided pain relief within minutes: 87% of users reported reduced pain after just five minutes, climbing to 96% by the 30-minute mark. Standard bandages were significantly less effective at every time point.
Hydrocolloid dressings also speed up healing. Blisters treated with them healed roughly 33% faster than those covered with regular plasters. Users rated the cushioning as “very good” or “excellent” at nearly twice the rate of standard bandages (73% versus 39%), and the adhesion held up better on feet, with about 90% of users saying the plaster stayed in place well.
If you don’t have hydrocolloid patches, moleskin is a solid alternative, especially for heel blisters where shoes create constant friction. For a small blister, cut a donut shape out of a piece of moleskin so the padding surrounds the blister without pressing directly on it. For larger blisters or general hot spots, cover the whole area. Molefoam is a thicker version that provides extra cushioning if thin moleskin isn’t enough.
How to Clean an Open Blister
If your blister has already popped or you’ve drained it yourself, wash the area gently with mild soap and water. Pat it dry, then apply a thin layer of petroleum jelly or antibiotic ointment before covering it with a clean bandage. Avoid hydrogen peroxide and rubbing alcohol directly on the raw skin, as these can damage the new tissue trying to form and slow your healing down.
Change the bandage at least once a day, or whenever it gets wet or dirty. Each time you change it, check the skin underneath for signs of infection: increasing redness that spreads beyond the blister’s edge, unusual warmth, swelling, pus, or pain that’s getting worse instead of better. These signs mean you should get it looked at.
What Slows Healing Down
A heel blister that isn’t re-irritated typically resolves within a few days. But if friction or pressure continues in the same spot, healing can drag on for two weeks or longer. This is the most common reason heel blisters don’t get better: people keep wearing the same shoes that caused the problem.
While your blister heals, switch to shoes that don’t rub the back of your heel. Open-backed shoes, sandals, or a pair with a softer heel counter all work. If you need to wear closed shoes, pad the area well and make sure your socks aren’t bunching at the heel. Going barefoot at home gives the area a break from friction entirely.
People with diabetes or poor circulation should be especially careful with foot blisters. Healing takes longer when blood flow to the feet is reduced, and the risk of infection is higher. If you fall into this category, treating even a small heel blister with extra attention is worth it.
Preventing the Next One
Heel blisters are caused by repetitive friction, usually from shoes that slip at the back or are stiff and not yet broken in. Moisture makes it worse by increasing the friction between your skin and your sock. Socks work as a barrier by wicking moisture away from your skin and lowering that friction coefficient, so the material matters.
Moisture-wicking synthetic or merino wool socks outperform cotton, which holds sweat against the skin. Some athletes use double-layer socks, where the two layers slide against each other instead of letting the sock slide against your skin. For shoes you know cause trouble, applying an anti-friction balm or stick to your heels before putting on socks adds another layer of protection.
Proper shoe fit is the most effective prevention. Your heel should sit snugly in the shoe without lifting when you walk. New shoes that are stiff at the heel counter can be broken in gradually, wearing them for short periods before committing to a full day. Zinc oxide tape applied directly to the heel before activity is another option popular in sports, creating a smooth, low-friction surface that takes the shear force instead of your skin.