Everyone sweats, but not all sweat is equally manageable. Some of it is discreet, some is noticeable, and some, like swass, is downright disruptive. If you're thinking, "WTH is swass?" you're not alone. It's one of those delightfully dreadful plays on words that describes a very un-delightful phenomenon: sweaty ass.
While it’s uncomfortable and, well, moist, (shudder), swass is more common than you’d think, — and it’s not just a summer or gym-only issue. It affects people of all genders, shapes and sizes, and can turn a perfectly good day into a hot, sticky mess. Let’s unpack the science (and shame) around swass — and more importantly, how to prevent, stop and get rid of it.
What Is Swass?
Swass is the colloquial term for “sweaty ass,” specifically when perspiration accumulates in the booty region, especially where skin meets skin, like under the butt or in the crease between your thighs and cheeks. It’s often made worse by heat, tight clothing, physical activity or even just sitting for long periods. The result? Damp underwear, potential chafing and the uncomfortable awareness that your bottom half feels like it’s been to hot yoga — minus the fun and stretching.
But beyond discomfort, swass can cause friction, irritation and even skin issues like folliculitis or intertrigo (a fancy name for inflamed folds). For some, it’s an occasional annoyance; for others, it’s a daily battle.
If you’re wondering — yes, it’s the same thing as swamp ass or sweaty butt. And it’s something we at Thigh Society know a lot about.
How to Prevent Swass
Preventing swass is part science, part strategy and a whole lot of self-care. The key is minimizing moisture buildup and increasing airflow where it matters most. This is where prevention becomes proactive.
1. Choose the Right Undergarments
If you’re thinking 100 percent cotton undies are your best weapon against swass, think again. It may be breathable, but it actually holds onto moisture rather than wicking it away. If you’re serious about prevention, you need hi-tech, sweat-fighting underwear that doesn’t trap heat. Think performance fabrics which feel like a cool breeze in textile form.
This is where Thigh Society changes the game. Our anti-chafing shorts aren’t just for thigh rub — they’re built for breathability, moisture management and all-day comfort. Made from lightweight, seamless materials, these slip shorts wick away sweat and prevent fabric from clinging to your skin. It’s like giving your bottom half a first-class upgrade. Bonus: our shorties come in inclusive sizing and an aesthetically minimal design, so you can wear them under dresses, skirts or loose trousers without the dreaded VPL (visible panty line).
2. Prioritize Breathable Bottoms
Jeans and leggings have their place, but they aren’t always swass-friendly. Opt for looser styles or moisture-wicking athleisure that won’t suffocate your skin. And steer clear of linings that aren’t breathable, unless they’re designed to cool and dry.
How to Stop Swass
If you’re already mid-swass, prevention goes out the window — it’s time for damage control.
1. Freshen Up Midday
A quick wipe-down with a body-safe, alcohol-free cleansing cloth can reset your situation fast. Keep a travel-sized pack in your bag, car or desk, especially during the summer or travel-heavy days.
2. Swap Your Underwear
An emergency pair of fresh underwear isn’t overkill, it’s tactical. Whether post-gym or post-sweaty commute, a quick change can instantly upgrade your comfort and mood.
3. Layer Smart with Thigh Society
Already sweating? Thigh Society shorties can help you bounce back. Our moisture-wicking fabric works even mid-sweat, helping you stay dry(er), fresher and less miserable.
How to Get Rid of Swass (For Good)
If swass isn’t just a random occurrence but a recurring character in your life,, it’s time for a more strategic approach.
1. Make Showers Count
Use a gentle, pH-balanced cleanser to wash away sweat and bacteria. And dry off completely — lingering moisture is swass’s BFF.
2. Try a Sweat-Reducing Routine
Some swear by applying antiperspirant in high-sweat zones (yes, even there, but patch test first). Others find success with wearing breathable clothes designed to keep you cool throughout their day.
3. Layer Like a Pro
It’s not just what you wear, it’s how you wear it. A breathable base layer like our Cooling shorts creates airflow, reduces friction and keeps sweat from pooling where it shouldn’t.
4. Talk to a Dermatologist
If your swass is particularly intense or causing skin issues, it might be hyperhidrosis or another treatable condition. A derm can recommend clinical solutions like prescription antiperspirants or even Botox.
We obsess over facial mists, scalp serums and fancy deodorants, so why pretend butt sweat is taboo? Swass is real, it’s common and it’s manageable. With the right gear (hello, Thigh Society) and a little strategy, you can beat the heat — cheeks first.
