A wetsuit rash after swimming is usually friction or trapped heat against the skin. The first move is to get the wetsuit off and rinse the area with cool or lukewarm fresh water. Hot water makes the itch worse, and saltwater or chlorine left on the skin will keep irritating it. Pat the area dry with a clean towel instead of rubbing.
Start with that basic care, then figure out which type of rash you are dealing with before you treat it further.
What kind of rash is it?
- Friction rash. This is the usual culprit. It looks red, raw, or tender and appears where the suit rubs: the neck, underarm openings, shoulder seams, wrist and ankle edges, or behind the knees. It may feel worse after a long swim or after rough water with extra arm movement.
- Heat rash. Small red bumps can form when skin stays hot and damp under a full suit, especially in water above about 70-72°F. A long warm-water swim in a full suit is a classic setup. The bumps often appear on the chest, back, or underarms.
- Folliculitis. This looks like small pimples around hair follicles. It can develop when skin stays in a damp suit, on the legs, groin, or chest. Folliculitis needs more careful cleaning and sometimes medical treatment, especially if bumps fill with pus or spread.
- Irritant contact dermatitis. This is a dry, itchy, bumpy reaction, not a rubbed-raw spot. It can be triggered by sunscreen, body wash, laundry detergent, or a suit that was not rinsed clean. If the same spot reacts to every suit, a dermatologist can patch test for a neoprene or liner allergy.
Basic aftercare for a friction or heat rash
For a simple friction rash, do these steps once or twice a day:
- Clean the area with cool water and a mild, fragrance-free soap.
- Pat it dry with a clean towel.
- Apply a fragrance-free moisturizer if the skin is dry or tight.
- Use a zinc oxide barrier ointment if the skin is raw or weeping, to keep it protected.
- Wear loose, breathable clothing over the area while it heals.
- Stay out of the wetsuit until the skin no longer feels broken or tender.
For itching, a pharmacist can advise on a low-strength hydrocortisone cream. Follow the label and do not use it on broken skin. Keep fingernails short so nighttime scratching does not reopen the area.
A heat rash usually fades once the skin can breathe. Cool compresses, loose clothing, and time out of the suit are the main fixes. Do not try to scrub the bumps away.
When to have a medical provider look at it
Most wetsuit rashes are minor. A few signs mean you should stop home care and get medical help: spreading redness, warmth, swelling, pus, red streaks, fever, or a rash that keeps growing after a day or two. These can signal an infection.
If the same spot reacts every time you swim, even after a fit adjustment and better rinsing, see a dermatologist. Patch testing can tell whether the reaction is to neoprene, a liner, sunscreen, or something else. Do not assume an allergy and keep wearing the same suit.
Preventing the next rash
Rinse your suit after every swim. Salt, chlorine, and body oils left in the fabric can sit against your skin on the next swim. Wash the suit periodically with a wetsuit cleaner or a mild, suit-safe soap, then dry it inside and out away from direct sun. Do not leave a damp suit in a bag or in a car.
Change out of the suit after the swim. Standing around in a wet suit invites heat rash and folliculitis. Get dry, change into clean clothing, and let the suit air out.
Use a water-resistant anti-chafe balm on spots that rub. Neck, underarm edge, and behind the knees are the usual places. Test a small area the first time to make sure your skin tolerates the product. Avoid heavily scented lotions and soaps on any area that sits under the suit, because fragrance increases irritation for some swimmers.
For warm-water swims above roughly 70-72°F, consider a sleeveless suit or a swimskin instead of a full suit. A full suit over a long warm swim can hold too much heat and trigger a heat rash. Save the full suit for cooler water or shorter sessions.
A fit check for recurring neck rash
A recurring rash at the neckline often points to donning or fit rather than the suit materials.
Put the suit on slowly. Pull the legs and torso up fully first, then work the shoulders into place. Reach back and lift the suit from the lower back into the armpits so there is no slack pulling the neckline down. A suit that sits high through the torso and armpits can still feel snug without digging into the neck. If the neckline still bites, the suit may be too small through the shoulders or chest, or the cut may not match your shape.
A suit that is too loose can rub just as much as one that is too tight. Loose neoprene shifts with each stroke and creates friction. You want the suit snug on dry land and more comfortable once water enters and the suit settles.
blueseventy sizes the women's range with Femme Fit patterning, which adjusts the bust, torso, wrists, and ankles for a closer women's cut. The 2021 Fusion redesign lowered the neckline for comfort while keeping the watertight seal. If the rash is a repeat problem along the neckline, a lower-neckline suit is a practical place to start. Use the sizing tool or size chart before ordering, and remember the Test Swim policy lets you swim in a suit and still return or exchange it clean and dry within 30 days if the fit is wrong.
Treat the rash first, give the skin time to heal, then fix the fit or routine that caused it. That order prevents a small rub from becoming a recurring open wound.
