These Undies Improve Skin Health - And "UTI Sufferers" Are Calling It a Game Changer

Lisa R.

January 1, 2026

Rear view of woman wearing black Oya Femtech cooling activewear with racerback sports bra and high-waist briefs

Over 3,000 women have switched to Oya’s ventilated bottoms designed to manage sweat where it matters most.

Most underwear feels fine until you start moving and moisture gets trapped against your skin.

Oya underwear was engineered for real life, using a patented, fast drying ventilation system that keeps the pelvic area cooler, dryer, and more pH balanced throughout the day.

After testing 30+ fabric combinations, developing a patented moisture-management system, and working alongside 100+ medical professionals — including OB/GYNs, dermatologists, and urologists — Oya created underwear that does more than cover your body.

It protects your skin.

And for many women, it’s replaced everything else they used to tolerate.

Your Skin Is Under Constant Attack (And You Can't Even See It)

❌ Standard underwear and activewear trap heat and moisture against your skin

❌ Harmful bacteria and fungi multiply in warm, dark, wet environments

❌ Over time, standard underwear and activewear can disrupt your skin’s microbiome, especially if they’re made with toxic chemicals like BPAs and PFAs

That’s when irritation turns into rashes, odor, yeast infections, BV, and UTIs.

✅ Up to 75% of women experience at least one yeast infection in their lifetime (Cleveland Clinic)

✅ Women who sweat a lot show an increased risk for infection-linked bacteria (MDPI)

✅ Moisture-retaining textiles (like cotton) are known to disrupt skin health (NIH)

✅ Many performance fabrics contain toxins like PFAs or BPAs — chemicals that are not required to be disclosed to consumers (NRDC)

Meaning, your body isn’t failing you.

Your underwear is.

See How Oya Protects Your Skin

👉

Save Up To 40% Today!

Rethink Sweat!

Take This 15 Minute Sweat Test!

Put on a typical pair of underwear.

Move around. Workout. Sweat.

After just 15 minutes notice:

♨

Heat builds up and the fabric traps sweat

✇

Odor caused by sweat + bacteria buildups during movement

☂

Skin begins to feel damp, itchy, and irritated

𖠘

Bad bacteria and yeast multiply

⚖️

Your pH balance gets thrown off

Bacteria and yeast thrive in warm, moist, low-airflow environments — exactly what standard underwear creates once you are moving.

Within 15 minutes, trapped sweat raises skin temperature, disrupts your natural pH, and gives odor- and infection-causing microbes the perfect conditions to multiply. This is why irritation, odor, and recurring infections feel so common — even when hygiene is not the issue.

Most underwear wasn’t designed to manage heat or sweat after it appeared.

Oya underwear is engineered to interrupt that cycle before bacteria can take over.

Our ventilated mesh creates continuous airflow, allowing heat to escape and sweat to evaporate instead of sitting against your skin. The result is a cooler, drier environment that supports your skin’s natural microbiome.

For extra protection, Oya is compatible with a removable absorbent insert — designed to pull moisture away from the body without sealing it in.

Dryer skin = fewer microbes = less irritation.

The result?

Your skin stays 1-2°F cooler, even during long wear or high heat.

Why That "Normal" Swamp Crotch Isn't Normal At All

Why Your Skin Stays Damp

Swamp crotch isn’t just about sweating — it’s about what your underwear does with that sweat. Some fabrics trap moisture. Others manage it. And that difference matters more than most women are ever told.

The vagina is a self-cleaning organ, meaning natural discharge is normal — and often increases with sweat, heat, and hormonal changes like puberty, pregnancy, postpartum, and peri-menopause (PMC).

When tight, moisture-trapping underwear or leggings don’t allow airflow or evaporation, that dampness stays pressed against warm skin. Over time, this can disrupt the vulvar and vaginal microbiome, creating conditions where yeast and bacteria are more likely to thrive (PBUK).

That’s why ventilation and fast-drying fabrics matter — not to stop what your body does naturally, but to let moisture escape so skin can stay cool, balanced, and healthy.

94% of our Oya wearers report drying faster post workout.

In a survey of 108 medical doctors, up to 94% reported improved post-workout sweat evaporation when wearing Oya bottoms.

The Irritation That Won’t Quit

You know that feeling when you change your underwear…and the irritation still doesn’t go away.

When the itching, dampness, or odor keeps coming back no matter how many products you try.

That’s not your body “being sensitive” — it’s your skin reacting to hours of trapped heat, sweat, friction, and chemicals in the one area that needs airflow the most.

We’ve normalized discomfort that shouldn’t exist.

Those Infections And Rashes Aren't A Mystery

Research shows the vaginal and urinary microbiomes are closely connected and sensitive to changes in moisture, temperature, and airflow, with disruptions in the vaginal microbiome linked to urinary tract infection susceptibility (PubMed).

Moist, warm environments — like those created by tight, non-breathable fabrics — can make it easier for fungi such as Candida to thrive and for bacterial balance to shift, contributing to conditions associated with yeast infections and bacterial vaginosis (Apollo 24|7).

While underwear themselves don’t directly cause UTIs, BV, or yeast infections, garments that trap sweat and heat can contribute to conditions that increase the risk of these issues (Motherly).

The Skin Damage You Can't See (Yet)

When your pelvic area stays damp for hours in toxic fabrics, the damage isn’t always immediate — but it is happening.

Constant moisture and heat increase friction, weaken the skin barrier, and disrupt the vaginal and vulvar microbiome. This creates an ideal environment for irritation, odor-causing bacteria, yeast overgrowth, and inflammation — even if you shower regularly.

Additionally, many performance fabrics are treated with chemicals like polyfluoroalkyl substances (PFAS) and bisphenol As (BPAs). These are commonly used in activewear and may be absorbed more easily through the skin when sweat and heat are present, contributing to long-term skin and hormonal stress.

Swamp crotch isn’t just uncomfortable.

It’s a signal that your skin is under chronic stress

“BPAs have been shown in experimental studies to influence cancer-related cell behavior and may predispose individuals to disease at doses below reference safety thresholds.” (PubMed)

Still think that swamp crotch is normal?

Stop The Damage Today

👉

January Offer Live Now (While Stock Lasts)

87% of Customers Report Fewer Infections and Less Skin Irritation After Switching to Oya

Based on our customer surveys and real testimonials:

✅ 87% Report Fewer Infections and Less Skin Irritation After Switching to Oya

✅ 91% Would Recommend to Someone With Sensitive Skin

✅ Hundreds report eliminated infections and rashes

Independent laboratories have verified these claims using AATCC 79, AATCC 197, ASTM D737, AATCC 199, ATCC 6538, and ATCC 4352 standards.

Rear view of woman wearing beige ribbed high-waist underwear and matching cropped tank from Oya Femtech Apparel

One customer shared:

"I took these on a 12-day camping trip with my son and his Boy Scouts troop. We didn't have access to a shower, so I wore these in my leggings and washed them in the river each day. I even safety pinned a clean insert to my underwear at night. And, after 12 days, I had no yeast infections, UTIs, or BV. Worked like a charm." - REI Review

Military-Grade Protection That Looks Like Regular Undies

Oya underwear are not just a fashion choice.

Oya’s design philosophy comes from environments where performance, safety, and reliability matter — including designing for the U.S. Military.

2X Wicking, 2X Absorbency, 3X Breathability

Reduces Moisture and Bacteria, Which Often Lead to Skin Infections

Fabrics Free From 80,000 Toxins Like BPAs and PFAs

This isn’t about extreme conditions — it’s about applying proven, high-performance textile science to everyday wear.

The result? Support that works with your body, not against it.

Close-up of woman wearing beige striped high-waisted femtech underwear with cooling fabric

Features:

✅ Wide waistband that doesn’t dig

✅ Smooth leg openings that don’t pinch or irritate

✅ Lightweight, breathable feel

✅ Secure fit that stays in place

Ridiculously Comfortable (You'll Forget It's Protecting You)

Protection only works if you actually want to wear it.

That’s why Oya is designed for all-day comfort.

Most people forget they’re wearing “protective” underwear — until they realize how much better they feel.

Save Up To 40% On Oya Undies Today

👉

Only During This January

Let's talk price. Yes, $40 for underwear sounds like a lot.

But what's the cost of:

Lost productivity from daily irritation?	2 unproductive hours = $60/day at average wages
Daily supplement trying to fight irritation?	$2/pill = $60/month supply
Doctor visit for each infection?	$150/doctor visit
Prescribed medication for each infection?	$20-150/prescription
One therapy session for stress & anxiety?	$150-300

Why $40 Is Less Than You're Already Losing

A pack of Oya undies costs less than two tanks of gas. And with 15% off right now, You're looking at just $34.

Our signature fabric is treated with a proprietary xylitol and silver fuze blend that is approved by the EPA. This blend costs the same to produce as a sports bra. Production cost is ~10x that of a standard pair of underwear.

For $34 they better be good and they are! Live the life of luxury! I would rather buy these than eat out for lunch 2 days a week!

The Uncomfortable Truth: Your Most Sensitive Skin Is Exposed

The skin around your vulva is some of the most absorbent on your body.

If you’re careful about skincare, food, and hygiene — but ignore what touches that skin for 12+ hours a day — there’s a gap in protection.

Oya exists to close that gap.

If you don't close that gap, you can continue to experience:

♂️

Chronic Irritation

Recurring discomfort, odor, and inflammation become normal

𓆇

Decreased Fertility

Endocrine disruptors and repeated infections impact menstrual and egg health

➕

Cumulative Exposure

PFAs don’t break down easily in the human body, so repeated skin contact builds up

༄

Damaged Skin Barrier

Friction and moisture weaken the protective layer

𖠘

Microbial Imbalance

Bacteria and yeast can multiply unchecked

"I recommend Oya to patients with recurring skin infections. The ventilation, absorption, and low-tox fabrics address the root causes."

- Dr. Sarah St. Louis, Board Certified OB/GYN

That's why smart customers don't stop at briefs:

Black womens high-cut femtech underwear made with cooling, moisture control fabric

Black women's femtech activewear underwear with cooling and moisture control technology on gray background

HSA/FSA Eligible

The "Barely There" Thong

One-line product description

$25.00

(25)

Woman stretching in beige ribbed Oya Femtech activewear set against dark background

Woman wearing beige ribbed femtech activewear set with crop top and high-waist briefs on gray background

HSA/FSA Eligible

PFA-Free Flame Resistant, Breathable Underwear

One-line product description

$52.00

(20)

Men's PFA-Free Cooling, Flame Resistant, Breathable Boxer Briefs

Man lifting olive green shirt showing olive green boxer briefs with black waistband on gray background

HSA/FSA Eligible

Men's PFA-Free Cooling, Flame Resistant, Breathable Boxer Briefs

One-line product description

$55.00

(30)

I bought every product I could get my hands on from OYA and I can honestly say that the products are worth the investment. Thank you OYA for the protection for me and my daughters.

Build Your Complete Protection System

👉

Save Up To 40% On Bundles

Even The Skeptics Can't Argue With How They Feel

Is this just expensive pseudoscience fabric stuff?

We get it. It sounds too simple. But consider:

✓ Independent labs have verified our 2X Sweat Wicking, 2X Absorbency, 3X Breathability and 99.9% bacteria blocking claims
✓ High-sweat populations show increased levels of infection-linked bacteria (MDPI)
✓ Moisture-retaining textiles (like cotton) are known to disrupt skin health (PubMed)
✓ Air Force Combat Pilots wear Oya underwear to manage moisture
✓ Over 3,000 people currently use and love their Oya products

Will I look weird?

It's a comfortable pair of black mesh undies. Nobody will know it's anything special unless you tell them.

What if it doesn't work for me?

30-day No Risk Money-Back Guarantee. Wear it. Workout in it. Test it. If you don't feel different, get a full store credit. No questions asked.

Will it last?

Machine wash cold, hang dry or tumble low. The silver and xylitol treatments are locked in – the protection and cooling properties are certified for at least 100 washes.

The Science Is Clear (Even If You Don't Want To Hear It)

"Extremely impressed by the quality of fabrics and construction. I love that someone actually thought about what we really needed and created products that give that functionality in wearable, cute items."

Dr. Emily G.
Dermatologist

✅ Recommended by 80+ healthcare professionals

✅ HSA/FSA eligible (medical-grade recognition)

✅ 91% Would Recommend to Someone With Sensitive Skin

✅ Hundreds report eliminated infections and rashes

Oya isn’t a temporary fix. It is a longer-lasting, preventative solution that supports your skin health daily.

Protect Your Skin Today

👉

Save Up To 40% + Free Shipping On US Orders +$100

What 3,000+ Protected Skin Barriers Are Saying

“My wife wanted to grab this for her mother in law. She originally wanted it for herself but they didn’t have her size.After trying the mother in law tried it out, they told me it was really comfortable and form fitting. It’s great for a long day at work because it breathes so well.”

Robert H.

“I love my Oya! Underwear that are fabulously comfortable all day long - what a revelation. I have the full coverage and the thong and both are excellent. No lines, no bunching. Honestly, you don’t notice them at all, which is how all underwear should be. These are underwear that women have been waiting for. Thank you!”

Coraline D.

“These underwear have a very light material but very resistant, so I feel secure but I feel I can breathe down there. The fit is just right and comfortable for every day or for the gym. I wore them with or without the insert and liked it in both situation. The insert is especially useful when I go to the gym and get more sweaty. And it is so easy to remove the insert from the underwear right after the gym! I really recommend them!”

Lee

These underwear have a very light material but very resistant, so I feel secure but I feel I can breathe down there. The fit is just right and comfortable for every day or for the gym. I wore them with or without the insert and liked it in both situation. The insert is especially useful when I go to the gym and get more sweaty. And it is so easy to remove the insert from the underwear right after the gym! I really recommend them.

Tasha

Every Day You Wait, The Exposure Continues

Woman wearing black Oya Femtech cooling activewear set with sports bra and briefs, standing on gray background

Right now, as you read this, your skin barriers is being bombarded by:

⚠️ Warm environments
⚠️ Moist conditions
⚠️ Poor airflow
⚠️ Toxic chemically treated fabrics

Woman wearing black Oya Femtech activewear with cooling and moisture control, standing against gray background

Every day you wait is another day of:

⚠️ The heat.
⚠️ The moisture.
⚠️ The irritation.
⚠️ The reduced skin health.

Or you can join the thousands of women who've already taken control.

Your skin is your largest organ. Isn't it worth protecting?

Get Your Oya Undies Now

👉

Up to 40% Off + 30-Day Guarantee

🛡️Protection & Performance

Oya's underwear act as a temperature regulator with special blends of plant extracts that will react to the temperature of your skin and regulate it effectively. The mesh absorbs body sweat and gives a cool sensation to your body. It reduces temperature by up 2°F, even during long wear or high heat.
Our silver treatment has undergone a comprehensive set of evaluations consistent with ISO and medical biocompatibility standards:
- Dermal sensitization & irritation (ISO 10993-10): Passed with no sensitization or irritation responses.
- Ocular irritation (ISO 10993-23): Passed with no adverse reactions.
- Rat cytotoxicity (ISO 10993-5): Completed successfully, confirming no cytotoxic response.
- Additional safety work: No off-gassing, no effluent from production, no promotion of resistant organisms after repeated laundering.
- Our fabric prevents microbial growth only on the textile surface.
- Our fabric does not leach or spread into the environment where it could affect surrounding bacteria.
Results vary by individual. Some customers report immediate skin temperature reduction within minutes. Most notice improvements in skin health clarity within 3-7 days. Infection and irritation improvements typically reported within the first month.
Many customers wear Oya undies during high-exposure times: working out, walking, or sweaty/stressful periods. Some wear it all day. It's about your comfort level and exposure concerns.
Independent ICP–MS wash studies confirm silver release is below detection limits and skin cooling effects even after 100+ industrial wash cycles.

👕 Comfort & Wearability

Yes! These underwear provide:
- Full Coverage: Provides comfort and security in both the front and back.
- Comfort Fit: Wide waistband and leg openings prevent digging and irritation.
- Perfect For: Sweaty days, camping, rock climbing, or everyday comfort.Customers regularly report sleeping in it comfortably.
Completely. These undies look like any premium underwear. No one will know it's special unless you tell them.
No. The insert provides extra absorption and bacteria reduction capabilities. However, the underwear function perfectly without them.
Yes. The cheeks are designed to provide full coverage. But if you're concerned about pinching, then we suggest sizing up.
Yes. These are regular underwear. You can wear them under anything.

🧼 Care & Maintenance

- Machine wash cold on a delicate cycle, inside out in your free Oya mesh bag
- Wash with synthetics only (no cotton)
- Avoid fabric softener
- Tumble dry low
After each use like normal underwear. However, given their bacteria reducing and cooling properties, you can keep on the same pair for extended periods.
Independent ICP–MS wash studies confirm silver release is below detection limits and skin cooling effects even after 100+ industrial wash cycles.

💰 Pricing & Value

✅ This fabric contains silver FUSE (silver currently trades at $30/ounce)
✅ Production cost is ~10x that of normal underwear
✅ Patented R&D to make it fight feminine health issues
✅ Independent laboratory testing and certification
✅ Small-batch, quality-controlled manufacturing
✅ Made in USA
✅ Woman owned
There are other skin health underwear, but none match our combination of protection level (99.9% of bacteria), comfort, style, and scientific validation. Cheaper alternatives often sacrifice protection or wearability.
Yes! Save 25% when you buy multiple items or complete protection sets (bra, legging, underwear).
Check our website for current payment options including potential installment plans through our payment partners like Klarna.

🔬 Science & Certification

Independent laboratories have verified Oya claims using AATCC 79, AATCC 197, ASTM D737, AATCC 199, ATCC 6538, and ATCC 4352 standards.
Our silver treatment has undergone a comprehensive set of evaluations consistent with ISO and medical biocompatibility standards:
- Dermal sensitization & irritation (ISO 10993-10): Passed with no sensitization or irritation responses.
- Ocular irritation (ISO 10993-23): Passed with no adverse reactions.
- Rat cytotoxicity (ISO 10993-5): Completed successfully, confirming no cytotoxic response.
- Additional safety work: No off-gassing, no effluent from production, no promotion of resistant organisms after repeated laundering.
- Our fabric prevents microbial growth only on the textile surface.
- Our fabric does not leach or spread into the environment where it could affect surrounding bacteria.
No known negative side effects.

📦 Ordering & Shipping

We offer a 30-day return policy on all unworn items with original tags attached. Please contact our customer service team to initiate a return.
Should you not enjoy your insert or "Barely There" undies, we are happy to offer a store credit as lingerie items (like inserts and underwear) cannot be resold once worn.
Standard shipping typically takes 5-7 business days. Express shipping options are available at checkout for faster delivery.
Yes, we ship to most countries worldwide. International shipping rates and delivery times vary by location.

❓Common Concerns

No. BPAs and PFAs are classified as "possibly carcinogenic." NIH has published studies on potential health effects of these carcinogens and tight, non-breathable clothing. Our technology is HSA/FSA approved, based on OB/GYN researched, and used in military applications.
✅ Recommended by 60+ healthcare professionals
✅ HSA/FSA eligible (medical-grade recognition)
✅ 91% Would Recommend to Someone With Sensitive Skin
✅ Hundreds report eliminated infections and rashes
Yes. 91% of customers would recommend to someone with sensitive skin.
That's why we offer the 30-day guarantee. Many skeptics become believers after experiencing the difference. As one customer said: "Even if it's placebo, it's the best $40 placebo ever."
No. We do not suggest that you wear these underwear.

🏢 Company & Support

Yes! Check out our About Us page here.
We are designed and manufactures in Los Angeles, Caifornia.
Email us directly at CustomerService@WearOya.com or DM us on Instagram: @WearOya.
Yes - we offer a lifetime warranty on all Oya products. Should you experience any product issues, please submit a product exchange request form.
Yes. You can see all of our non-toxic and breathable styles here.

Get Your Oya Undies Now

👉

Up to 40% Off + 30-Day Guarantee

Recommended

"Barely There" Brief (2-Pack)

These Undies Improve Skin Health - And "UTI Sufferers" Are Calling It a Game Changer

That’s when irritation turns into rashes, odor, yeast infections, BV, and UTIs.

94% of our Oya wearers report drying faster post workout.

Based on our customer surveys and real testimonials:

One customer shared:

Features:

Let's talk price. Yes, $40 for underwear sounds like a lot.

But what's the cost of:

If you don't close that gap, you can continue to experience:

That's why smart customers don't stop at briefs:

The "Barely There" Thong

PFA-Free Flame Resistant, Breathable Underwear

Men's PFA-Free Cooling, Flame Resistant, Breathable Boxer Briefs

Is this just expensive pseudoscience fabric stuff?

"Extremely impressed by the quality of fabrics and construction. I love that someone actually thought about what we really needed and created products that give that functionality in wearable, cute items."

Right now, as you read this, your skin barriers is being bombarded by:

Every day you wait is another day of:

🛡️Protection & Performance

👕 Comfort & Wearability

🧼 Care & Maintenance

💰 Pricing & Value

🔬 Science & Certification

📦 Ordering & Shipping

❓Common Concerns

🏢 Company & Support