The short answer: Rinse your period panty in cold water as soon as you take it off, until the water runs clear. Then wash it gently with a mild detergent, by hand or on a gentle machine cycle inside a wash bag, and air-dry it in the shade until it is completely dry. Avoid hot water, bleach and fabric softener, and never tumble dry or iron it. That simple routine keeps period panties clean, fresh and working well for many cycles.
Why period panties need a slightly different wash
A period panty looks like ordinary underwear, but the gusset, the part between your legs, is built in layers. Fabpad reusable period panties have a multi-layer absorbent core with a leak-resistant barrier underneath, in soft cotton spandex. Those layers are what hold your flow, and they are also what you are protecting when you wash.
Three things affect how long a pair keeps working well:
- The absorbent layers need to stay open and soft so they keep soaking up flow. Fabric softener and detergent left behind in the fabric can coat them.
- The leak-resistant barrier does not like heat. Hot water, tumble dryers and irons can damage it over time.
- The elastic at the waist and legs keeps the fit snug, which is what stops leaks at the sides. Heat, harsh scrubbing and bleach wear it out faster.
The good news is that caring for all three takes only a few extra minutes a day.
How to wash period panties: step by step
Step 1: Rinse in cold water
As soon as you take the panty off, hold it under cold running water, or swish it in a mug or bucket of cold water. Gently squeeze the gusset again and again until the water runs clear. Great Ormond Street Hospital's guidance on period products also says to soak or rinse period pants in cold water after you take them off.
Cold water matters. Blood contains proteins that set into fabric when heated, so warm or hot water makes stains harder to remove. A quick tip many people like is to rinse the panty while you shower.
Step 2: If you cannot wash it yet, store it properly
At school, the office or on a day out, roll the used panty with the gusset folded inwards and keep it in a zip pouch or a small washable bag. Rinse it as soon as you get home, ideally the same day. Do not leave it unrinsed for days, because dried blood is much harder to lift and can leave an odour.
Step 3: Wash gently
Use a mild detergent in cold water, either by hand or on a gentle machine cycle. Both methods are explained below.
Step 4: Rinse out all the detergent
Rinse until there are no more suds. Detergent left in the absorbent layers can make them less absorbent and can irritate sensitive skin. Cleveland Clinic suggests an extra rinse for period underwear.
Step 5: Air-dry in the shade
Squeeze gently, without wringing hard, and hang or lay the panty flat away from harsh direct sun. Let it dry completely before you wear it or put it away.
Hand-washing at home: the bucket method
Most Indian homes hand-wash underwear anyway, and period panties fit easily into that routine.
- Fill a small bucket or basin with cold water.
- After the first rinse, add a small amount of mild liquid detergent or panty wash. Fabpad panty wash comes in the Reusable Duo + Care and Reusable Trio + Care kits.
- Let the panty soak for a few minutes.
- Rub the gusset gently between your fingers. Do not scrub it on a washing stone or with a hard brush, which can damage the layers and the elastic.
- Rinse in fresh cold water two or three times, until the water is clear and there are no suds.
- Press out the water by squeezing or rolling the panty in a towel, then hang it to dry.
Wash your hands with soap afterwards, as you would after changing any period product. Rinsing period blood at home is not unhygienic, and there is no need to keep it separate from family laundry once it has been rinsed and washed.
Machine washing period panties
A washing machine is fine, as long as you treat period panties like delicates.
- Rinse first. Always do the cold rinse by hand before the panty goes into the machine.
- Use a wash bag. A mesh laundry bag stops the panty from stretching or catching on hooks and zips.
- Choose a gentle or delicates cycle with cold water. On front-loaders, check that the cycle you pick is not heating the water.
- Use a mild detergent. Skip detergents with added bleach or fabric softener.
- Wash with similar clothes. Once rinsed clear, many people wash period panties with their other underwear and light clothes. Others prefer to wash them separately. Either works.
- Skip the dryer. Take the panty out and air-dry it, even if the rest of the load goes in a dryer.
Drying period panties, including in the monsoon
Because of the absorbent layers, period panties take longer to dry than regular underwear. Michigan Medicine notes that air-drying is recommended and can take up to 48 hours. Planning for drying time is the real secret to a smooth routine.
Why shade, not harsh sun?
Strong direct sun for hours can fade colours and weaken elastic over time. A shaded balcony, a covered verandah or a well-ventilated room is enough. Good airflow matters more than sunlight.
Drying tips for humid weather
- Wash in the morning so the panty has the whole day to dry.
- Hang it with the gusset open, upside down from the waistband, so air reaches the thick part.
- Dry it indoors under a ceiling fan or near an open window when it is raining outside.
- Do not put it on a heater, hot iron or pressure cooker lid to speed things up. Heat can damage the barrier.
- Keep an extra pair or two in rotation during the monsoon and winter, so you never have to wear one that is still damp.
Always check the gusset before wearing or storing. It should feel completely dry, not just cool. A panty stored damp can develop a musty smell.
Mistakes that shorten the life of period panties
| Mistake | Why it is a problem | Do this instead |
|---|---|---|
| Rinsing in hot water | Sets blood stains and can weaken the barrier and elastic | Always rinse and wash in cold water |
| Using bleach | Damages the fabric and the leak-resistant layer | Use a mild detergent; soak in cold water for stains |
| Adding fabric softener | Coats the fibres so they absorb less, which can lead to leaks | Leave it out completely for period panties |
| Tumble drying | Heat can damage the barrier and elastic | Air-dry in the shade |
| Ironing | Heat and the barrier layer do not mix | Hang straight from the line; no ironing needed |
| Scrubbing hard or using a brush | Wears out the soft top layer and the elastic | Rub gently between your fingers |
| Leaving it unrinsed for days | Dried blood is harder to remove and can smell | Rinse the same day, even if you wash later |
| Storing it damp | Can lead to a musty odour | Make sure it is fully dry before folding away |
Getting rid of stains and odour
Some staining on a period panty is normal over time and does not affect how well it works. Darker colours like black, navy and maroon show it least. For fresher stains:
- Soak the panty in cold water with a little panty wash or mild detergent for 15 to 30 minutes, then rub the stain gently and wash as usual.
- Great Ormond Street Hospital suggests soaking period pants in a mix of vinegar and water before washing if they have stubborn stains or a lingering smell.
- Never use hot water to loosen a stain. It does the opposite.
If a pair smells even after washing, it is usually because it was worn too long, left unrinsed, or not dried fully. Change on time, rinse the same day, and give it longer to dry. Remember that Fabpad reusable period panties can be worn for up to 8 hours depending on flow, and less on heavy days.
Normal period blood has a mild smell. A strong fishy or unusual smell from your body, rather than the fabric, along with itching or unusual discharge, can be a sign of infection. Our guide to vaginal infections explains what to look out for.
Washing on the go: school, office, hostel and travel
At school or the office
Carry two zip pouches, one for clean pairs and one for used. You do not need to rinse at work. Roll up the used pair, seal the pouch, and rinse it as soon as you get home. Teens can find more tips in our guide to periods at school.
In a hostel or PG
Rinse in a mug or basin with cold water, wash with a few drops of mild detergent, and hang the panty on a hanger in your room or on a shaded balcony. A clip hanger lets you dry it inside a cupboard door overnight if you prefer privacy.
Travelling
Hotel bathrooms are fine for a quick rinse and wash. If you will be on trains or buses, or staying somewhere you cannot dry clothes, a disposable period panty is easier for those days.
Storing period panties between periods
Once your period is over, wash and dry every pair fully. Fold them and keep them in a clean, dry drawer or a cloth pouch, away from damp corners. In very humid places, check them once during the month and air them if they feel at all damp. Keeping them together in one pouch also means you can grab your whole set when your next period starts. If you are not sure when that will be, our guide on how to calculate your next period date can help.
When to replace a pair
With gentle care, period panties last many cycles. Signs a pair needs replacing include:
- the elastic at the legs or waist has loosened and the panty no longer sits snugly
- you get leaks with that pair that you did not get before, on similar flow days
- the fabric in the gusset has thinned or worn
- a smell remains even after soaking and washing
Rotating more pairs means each one is washed less often, which helps them all last longer. Our guide on how many period panties you need helps you work out a comfortable number.
Frequently asked questions
Can I wash period panties with my other clothes? Yes. Rinse it first until the water runs clear, then wash it with other light clothes on a gentle, cold cycle, ideally in a wash bag.
Can I use regular detergent? Yes, a mild one. Avoid detergents with added bleach or fabric softener.
Can I use Dettol or antiseptic liquid? It is not needed. Rinsing in cold water and washing with a mild detergent is enough. Harsh chemicals can damage the layers and irritate skin.
How long do period panties take to dry? Longer than regular underwear because of the absorbent layers. In humid weather, wash them in the morning and allow a full day or more.
Should I dry them in direct sunlight? Shade is better. Harsh sun for hours can fade colours and weaken elastic. Good airflow matters more than sun.
Do I need to wash a new pair before wearing it? Many people like to wash any new underwear before first wear. Follow the same cold, gentle routine.
Why is my period panty leaking after a few months? The most common reasons are fabric softener, hot water or tumble drying, or elastic that has loosened. Check your wash routine and the fit.
Related reading
- How Many Period Panties Do You Need?
- Period Panties for Heavy Flow: How They Work and How to Choose
- Period Panties for Sleep: How to Stay Leak-Free All Night
- Period Panties for Teens: A Parent's Guide
Sources: Great Ormond Street Hospital: Period products, Cleveland Clinic: What Is Period Underwear and Does It Work?, Michigan Medicine: A New Favorite Among People Who Menstruate: Period Underwear, Fabpad product information (fabric, wear time and care instructions)