Key Takeaways:
- The Right Routine: A cold rinse, gentle cycle, and air dry is all your period pants really need to stay leakproof.
- Ensuring Protection: Understand what to avoid to protect your leakproof layers.
- Stain Strategy: Cold water (never hot) is the secret to lifting period blood before it sets, so your undies look as fresh as day one.
- Fabric Care: Skip fabric softeners, bleach, and high heat to keep the absorbent layers doing their job, wash after wash.
If you’ve invested in a quality pair of period underwear, you want to make sure you care for it properly. But how do you actually wash them? Should you toss them in the machine? Use bleach? Hot water? It’s totally normal to have questions—and we’re here to give you answers.
At Saalt, we design period underwear with performance, comfort, and sustainability in mind. Our products feature high-tech moisture-wicking, odor-neutralizing fabrics that are never treated with PFAS and made to move with you. They deserve care that supports their long life and protects your skin too.
In this guide, we’ll walk you through exactly how to wash period underwear—from quick rinses to long-term love.
Step-by-Step: How Do You Wash Period Underwear?
To wash period underwear, first rinse them in cold water until the water runs clear. Next, machine wash on a cold, delicate cycle or hand wash with a mild, glycerin-free detergent. Finally, hang the garments to air dry. Avoid fabric softeners, bleach, and high heat.
Washing your period underwear the right way helps protect the absorbency, comfort, and longevity of each pair. Whether you prefer hand washing or a gentle machine cycle, a few simple steps can make a big difference in how your Saalt Wear performs over time.
The Centers for Disease Control and Prevention advises that most reusable period underwear is machine washable and emphasizes the importance of following the product's care instructions. They also highlight the necessity of changing menstrual products regularly to prevent health issues.
Here’s exactly how to clean your leakproof favorites—without compromising their tech or your routine.
Step 1 – Rinse Immediately After Use
After removing your period underwear, give them a quick rinse in cold water (30°C / 86°F or below) under a running tap. Avoid lukewarm or hot water, as heat denatures and coagulates blood proteins, permanently binding them to the fabric fibers and locking in stains and odors
Rinse until the water runs clear; gently press the fabric between your flat palms to extract excess water.
Avoid twisting or wringing your underwear, which can stretch the seams and damage the waterproof thermoplastic polyurethane (TPU) barrier.
How to Remove Blood Stains from Period Underwear
Pre-treating a bit of blood before it hits the wash is the easiest way to keep your period pants looking like new. Here’s the routine that actually works:
- Rinse straight away in cold water. Hot water sets period blood into the fiber, so cold is non-negotiable.
- Gently rub the gusset under the tap until the water runs clear. No scrubbing needed—your knickers will thank you.
- For stubborn spots, reach for an enzyme detergent. Our Saalt Period Underwear Detergent is formulated specifically to break down blood and flow without harsh chemicals.
Quick Note on Water Temperature:
Use cold water (86°F / 30°C or below) for both rinsing and machine washing. Never use hot water. Heat degrades the absorbent layers and sets blood stains. If you remember one thing about wash and care, let it be this.
Step 2 – Hand Wash or Machine Wash on Delicate
You’ve got options here. Either:
- Gently hand wash in cold water with mild detergent, or
- Use your washing machine’s delicate cycle with cold water
If machine washing, place your Saalt Wear in a delicates bag to reduce friction.
And yes, machine washing on a cold, gentle cycle will not reduce absorbency, as long as you avoid fabric softeners, bleach, and high heat. Those three are the only real threats to the gusset tech, so steer clear, and your undies will last longer than you’d expect.
Step 3 – Use Gentle, Fragrance-Free Detergent
Choose a gentle, fragrance-free detergent.
Avoid fabric softeners, chlorine bleach, and laundry soaps containing natural fats, glycerin, or plant-based oils (such as coconut or olive oil). These fatty compounds leave a thin, hydrophobic coating over the technical fibers, blocking the absorbent layer from pulling in moisture and leading to leaks.
Step 4 – Skip the Dryer
High heat isn’t a friend to high-performance fabrics. Line dry your period panties in a well-ventilated area away from direct sunlight. Air drying helps preserve the leakproof gusset and prevents shrinkage; plus, it’s the more eco-friendly option.
Step 5 – Store Clean and Dry
Once dry, store your underwear in a clean drawer or container. Keeping them dry between uses protects the integrity of the tech layers.
Need a few more pairs so you can rotate while others dry? Check out our bestselling period underwear styles for comfort, confidence, and leakproof performance.
What to Avoid When Washing Period Underwear
Washing period underwear isn’t complicated, but there are a few common mistakes to avoid:
- No bleach. It can degrade the fabric and irritate skin.
- No hot water. It can cause stains to set and harm moisture-wicking layers.
- No fabric softener. It coats the fibers and blocks absorption.
- No tumble dry. High heat damages elastics and the leakproof gusset.
By avoiding these, you’ll extend the life of your Saalt Wear.
Can You Use Vinegar or Baking Soda?
Some people wonder if natural cleaning solutions like vinegar or baking soda are okay for cleaning period underwear. Short answer: use caution.
While small amounts of baking soda can help remove odors, it may not be ideal for regular use. White vinegar, when diluted, may help break down buildup, but repeated use could irritate sensitive skin or weaken the protective layers. When in doubt, stick with gentle, fragrance-free detergent.
Understanding the Fabric Layers
Each pair of Saalt Wear is made with multi-layered, high-performance fabrics:
- Top layer: moisture-wicking and antimicrobial
- Middle layer: absorbent
- Bottom layer: leakproof
These materials are breathable, body-safe, and made with no PFAS used in manufacturing or finishes. We also test our products regularly to ensure safety. To protect all three layers, washing gently is key.
How Often Should You Wash Period Underwear?
You should wash your underwear after each use. Unlike reusable pads, which may be worn for a few hours and swapped out, it’s best to wash period underwear after every wear, before the next use. Washing promptly helps prevent stains, odor buildup, and fabric breakdown.
The NJ Department of Health provides detailed guidance on the use and care of period underwear, including recommendations on changing frequency, rinsing, washing, drying methods, and changing your underwear regularly throughout your cycle.
How to Wash Period Underwear When Traveling
On the go? Here’s how to wash your Saalt Wear while away from home:
- Rinse in cold water as soon as you can
- Use a travel-sized gentle detergent
- Wash in a sink or shower with cool water
- Gently wring out excess water
- Hang to dry in your bathroom or near a fan
Pro tip: Bring a waterproof pouch to store worn pairs until you can rinse them.
How to Clean Period Underwear With Stubborn Stains
For light stains, try:
- Rinsing promptly in cool water
- Soaking in cold water with a splash of detergent for 30 minutes
- Hand washing as usual
If stains persist, a diluted solution of baking soda paste (apply, wait 15 minutes, rinse well) may help. Just be cautious not to overuse it.
Are Period Underwear Sanitary?
Absolutely. When washed properly after each use, period underwear is safe and hygienic. The built-in antimicrobial properties help control odor and bacteria, and washing removes any residual fluid. For added peace of mind, use detergent and hang dry fully before storing.
Period Underwear + Period Products
Some people use period underwear on their own, while others pair them with products like a menstrual cup or period disc. It all depends on your flow and personal comfort.
If you’re using a menstrual disc, read this helpful guide on how to insert a menstrual disc for leak-free protection.
The Maryland State Education Association underscores the importance of proper menstrual hygiene practices, including the regular changing of menstrual products to prevent infections.
Can You Wash Moisture-Wicking Underwear the Same Way?
Yes. Our moisture-wicking underwear is made with breathable, high-performance fabric. It can be washed using the same steps:
- Rinse (if applicable)
- Cold wash on delicate
- Skip softeners, bleach, and dryers
- Hang to dry
This protects the fabric’s cooling, sweat-proof properties.
How to Deal with Odor in Period Underwear
If you notice a lingering smell in your underwear even after washing, try soaking them in a mixture of cold water and a small amount of gentle detergent for 30–60 minutes before your usual wash. Avoid scented products that mask odor—they can disrupt the fabric’s breathability and irritate your skin. Proper rinsing and full drying between wears also help eliminate buildup.
How to Wash Period Underwear in Hard Water Areas
Hard water can make detergents less effective, leading to buildup in your underwear over time. Use a detergent formulated for hard water or add a small amount of washing soda to your laundry load (just be sure it’s well dissolved). Rinse thoroughly, and don’t skip the hang-dry step—it’s essential for freshness.
Can You Iron Period Underwear?
We don’t recommend ironing your period underwear. The heat can damage the delicate tech layers and compromise absorbency. If you’re concerned about wrinkles or stiffness after air drying, gently smooth the fabric with your hands while it's still damp, then hang to finish drying naturally.
How to Create a Washing Routine That Works for You
Caring for your period underwear gets easier with a simple routine; a little TLC goes a long way:
- Keep a small basket for used pairs to rinse at night
- Wash on a set schedule (every other day works for many)
- Rotate through multiple pairs for easier care
Making it part of your regular laundry habit helps ensure you always have fresh, ready-to-go Saalt Wear on hand without last-minute stress.
How Long Should You Soak Period Underwear Before Washing?
Soaking can be an effective part of your washing routine—especially if you’re dealing with heavy flow days or older stains. But it’s important to properly wash your Saalt Wear by doing it right.
A quick soak of 30 minutes in cool water is typically enough to loosen dried blood and reduce staining. You can add a few drops of gentle detergent to help break down proteins naturally found in menstrual fluid.
Avoid overnight soaking, which can lead to mildew growth or fabric breakdown. And always follow up with a rinse and your regular wash cycle. Think of soaking as a pre-treatment, not a substitute for washing.
Can You Wash Period Underwear with Towels or Other Laundry?
Yes, but it’s best to follow a few guidelines to protect both your underwear and your other garments. Always wash with similarly colored items and on cold. Avoid mixing them with heavy-duty fabrics like jeans or towels unless your Saalt Wear is inside a mesh laundry bag. This reduces friction and helps maintain the delicate fabric layers.
Keep in mind: never use fabric softener—even if you’re washing your underwear with towels. The coating left behind by softeners can block absorbency and impact odor control, especially in high-performance garments.
What Makes Saalt Period Underwear Different?
At Saalt, we believe you shouldn’t have to choose between comfort, performance, and safety. That’s why every pair of Saalt Wear is made from premium fabrics that are:
- Moisture-wicking and odor-controlling
- Never treated with PFAS
- Tested regularly for safety and quality
- Designed with patent-backed leakproof technology (see our patents)
Whether you're pairing them with a menstrual cup,period disc, or wearing them solo, Saalt Wear is built for reliability, cycle after cycle.
Make the Switch
Knowing how to wash period underwear is key to protecting your investment and your skin. With just a few extra minutes of care, you’ll keep your Saalt Wear feeling fresh, leakproof, and ready to support you every cycle.
Whether you’re new to reusables or already building your collection, we’re here to help you get the most out of every wear. Plus, every pair of Saalt Wear is backed by our 90-Day Saalt Bliss Guarantee, so you can try reusable period underwear with confidence.
Still have questions? Check out our FAQ section below.
Read also:
Frequently Asked Questions About How to Wash Period Underwear
Can you put period underwear in the washing machine without reducing its absorbency?
Yes, you can absolutely machine wash your period underwear without losing absorbency. Just stick to a cold, gentle cycle and skip fabric softeners, bleach, and high heat. Those three are the only real threats to the leakproof gusset.
How do you remove blood stains from period underwear before putting it in the wash?
Start by rinsing your pair in cold water, since hot water will set the blood into the fabric. Gently rub the gusset under the tap until the water runs clear. For stubborn stains, pre-treat with an enzyme detergent.
What water temperature should you use when washing absorbent menstrual underwear?
You should always wash absorbent period underwear in cold water at 30°C (86°F) or below. This rule applies to both the initial rinse and the machine cycle. Hot water sets stains and breaks down the absorbent layers.
Can you machine wash period underwear?
Yes, just use the delicate cycle, cold water, and a delicates bag. Always skip fabric softener and air dry instead.
Do you have to rinse period underwear before washing?
Rinsing helps remove blood and makes washing more effective. It also prevents staining.
Can I wash period underwear with other clothes?
Yes—as long as they’re washed in cold water and you avoid softeners. Use a delicates bag to protect your underwear.
How to clean period underwear without a washing machine?
Hand washing is simple. Just soak in cool water, lather with gentle detergent, rinse well, and hang dry.
How do you wash period underwear while camping or backpacking?
Rinse in a portable sink or water container, use a travel detergent, and hang to dry in a breathable spot.
How long does it take for period underwear to dry?
It varies based on your climate, but most pairs air dry overnight. Never use a tumble dryer.
How to get blood stains out of period panties?
Cold water, gentle detergent, and soaking usually do the trick. Avoid hot water and harsh chemicals.
Can I use OxiClean on my period underwear?
We recommend avoiding stain removers with bleach or strong chemicals. Stick to gentle products only.
How often should I replace period underwear?
With proper care, your Saalt Wear is built to last for scores of home launderings. While we don’t assign a specific timeframe, proper washing is key to longevity.
