How to wash period panties

Illustration of how to take care of your period panties. Rinse, wash, dry.

How to wash period panties

Care guide

Taking good care of your period panties is important to make sure they last as long as possible. And washing your period underwear is easier than you may think. Here, we’ve gathered all you need to know about caring for your period panty favourites in the best way possible. Let’s get started.

How do period panties work?

Female Engineering’s period panties are designed to feel just like your regular underwear, only smarter. The secret lies inside the gusset of the panties where three layers work together to absorb your flow, lock in moisture, and prevent leaks. And because they’re washable, they can be used again and again.

All you need to know about washing your period underwear

Taking care of your Female Engineering period panties is just as easy as wearing them. The only thing that differs from washing ordinary underwear is the pre-rinsing. Follow these three easy steps to get your period panties ready for the next wear:

When you’re done wearing your period panties, rinse them in cold water until the water runs clear.

Pop them in the washing machine with the rest of your laundry and wash them at 40ºC with your regular detergent. Skip the fabric softener as it may reduce the period panties’ absorbency over time.

Hang to dry and skip the dryer to maintain the performance of the technical layers and extend the lifespan of your period panties.

That’s it – three easy steps to leave your period panties fresh and ready for your next period. Rinse, wash and dry, and you’re good to go.

Is washing them at 40°C really enough to keep the period underwear hygienic?

Yes, it is. The layers in the gusset of the underwear are treated with an odour control treatment that controls the development of odour in the panties. This means that you can wash your period underwear in cooler temperatures and still keep them clean and hygienic.

How do I store my period panties if I can't wash them immediately?

If you can’t wash your panties immediately, just rinse them right after use and hang them up to dry. After that, just put them in your laundry basket along with your other clothes and wash them when it suits you.

Are period panties hygienic?

The short answer is: yes, period panties are absolutely hygienic when cared for correctly. Period panties from Female Engineering are designed with a smart, multi-layer technology that absorbs fluids, locks in moisture and helps prevent odour. When washed and cared for according to instructions, they stay fresh and clean cycle after cycle.

How long can you wear period panties?

They can be worn for up to 12 hours or more, depending on your flow. For example, if you choose a high absorbency level for a day with medium flow, they can usually be worn even longer. There’s no need to change period panties during the day; you can trust the panties do their job all day or night.

Do you need to wash period panties straight away?

No, you don’t. After wearing your period panties, just rinse them in cold water and put them away until it's time to wash the rest of your clothes.

Can you wash period panties with other clothes?

Yes, you can! Make sure you rinse your period panties in cold water before washing them with the rest of your laundry. Avoid fabric softener and wash at 40ºC, and you’re good to go.

Can you put period panties in the dryer?

Putting your period panties in the dryer won’t damage them if it happens once or twice. But with that said, repeated tumble drying can damage the performance and lifespan of your panties. So, do your best to avoid the dryer and hang them to dry instead.

Can you hand wash period panties?

Yes, absolutely. Hand washing your period panties is great for when you’re out traveling or other times when you don’t have access to a washing machine. Just rinse them as usual, and hand wash them as you would with your ordinary underwear.

Two women in period panties.

Size guide

Not sure of your size? Time to grab the old tape measure and get that unique body of yours measured up!
Female Engineering products in a pile.

About Female Engineering

We are a Swedish femtech brand with the goal of reinventing female freedom. We’re here to find solutions to women’s real needs, riding the wave of period consciousness straight into the mainstream.
A woman wearing underwear from Female Engineering.

Period-proof panty guide

In this guide, we'll walk you through everything you need to know about period-proof panties, including how they work, the different absorbency levels, and tips for choosing the perfect pair. Say goodbye to pads and tampons – let's dive in!
A pile of packs of period panties.

45-day trial offer

Life with a female body should be hassle-free. That’s why we offer a free trial for 45 days when you buy our period underwear and swimwear for the first time. During that time, you can try, wear and wash the product. If you are not happy with your purchase, just contact our customer service, tell us about your reasons for wanting to return the product, and we’ll refund you - just like that. Please note that the trial offer only applies when you try a product for the first time.