Articles / How Does Period Underwear Work? Things Beginners Should Know

How Does Period Underwear Work? Things Beginners Should Know

13.04.2024 6 Minutes
How Does Period Underwear Work? Things Beginners Should Know

Picture your favorite pair of undies with a secret talent – a bit like a superhero costume, only way comfier. How does period underwear work? This genius creation is shaking up the world of menstrual health, as much for its function as for the eco-friendly, cost-effective edge it offers. Whether you're new to reusable period products or looking to upgrade your period care, here's the low-down on everything you need to know about period undies.

What Is Period Underwear?

Period underwear is specially designed underwear that offers protection during menstruation. Imagine underwear that can hold up to five tampons or pads—literally built to handle your flow with grace. Period undies are designed to make you feel both secure and comfortable.

They come in different styles, materials, and absorbencies. Want to find the perfect pair? Understand what factors matter when choosing the right one for you.

How Does Period Underwear Work?

Now, we've set the stage for understanding period underwear, let's delve into the mechanics behind this innovative menstrual product. How does period underwear work?

1. Absorbency

The magic is in the layers. These undies are like a complex onion – in a good way. They have a moisture-wicking layer, more absorbent layers for liquid to hang out in, and a leak-resistant outer shell. Basically, this is “how does period underwear work with clots”. Your flow gets absorbed, and you stay leak-free.

2. Moisture-Wicking Fabric

One of the big draws of period underwear is the material; think of it as a combo between your best gym clothes and your ultra-soft PJs. This fabric pulls moisture away from your skin, so you stay dry and comfortable all day.

3. Variety of Absorbency Levels

Period underwear isn't a one-size-fits-all solution. Instead, it offers a range of absorbencies tailored to different days and flows. Just like tampons and pads, you have light, moderate, and heavy options. With period underwear, you can say goodbye to juggling products and worries; let your underwear handle it all. Simply choose the right level, put them on, and continue living your best life.

4. Cleaning and Care

Embrace the 'wash and wear' routine effortlessly with period underwear. After use, hand rinse them in cold water until clear, then machine wash them with your laundry - no extra steps or special soaps are needed. It's that simple.

Those are the answers to “How does period underwear work?

5 Reasons to Switch to Period Underwear

Now that we've explored the benefits of period underwear, let's find out the reasons to switch to this menstrual solution.

1. Mother Earth - Approved

Enjoy the satisfaction of knowing you’re doing a little something for mother earth. Period undies are reusable, and that means less single-use product waste. Win for you, win for the planet.

2. Cost-Effective

With an initial investment upfront, you'll get to enjoy long-term savings. Say goodbye to monthly store runs for period care products; it's not just cost-effective but super convenient too.

3. Comfort

You know the drill with tampons – sometimes you can feel them. With period undies, you don't. They're slim, comfy, and feel just like regular undies.

4. Versatility

From days when you're in a mad rush to those unexpected early arrivals, they'll have your back, fully equipped.

5. Sustainable Choice

In a world increasingly aware of the impact of our actions on the environment, period undies are an incredibly sustainable choice, a small switch that makes a big difference.

How to Use Period Underwear?

It's as simple as changing your undies. When you're wearing period underwear, just wear them as you would your regular pair. When it's time to change, swap them out for a fresh pair. As products may vary across different brands, be sure to follow the care instructions when washing them, and they'll be as good as new for your next cycle.

Tips for Switching to Period Underwear:

  • Give period underwear a try with a trial pack or a couple of pairs to see if it's your thing, or do period underwear work?
  • Follow the washing instructions provided by the brand for your period undies.
  • Don't forget to stash some extra pairs in your bag!

Who Should Use Period Underwear?

All menstruating humans. They're a great entry into the world of reusable menstrual products and a fantastic ongoing solution for sustainability.

How Long Can You Wear Period Underwear?

The longevity of your wear depends on your flow and the absorbency level of your undies. On a light day, you can wear period undies for up to 24 hours, but it's a personal call. The key is to listen to your body and change as you need.

How to care for your Hello Period Undies:

After understanding how do period undies work? Let's learn how to take care of your period undies so that they can protect your health.

  • Step 1: Always wash before use

Hello Undies are crafted to become even softer with each wash, ensuring a cozy feel every time.

  • Step 2: Wear in place of single use period products

No need to double up here.

  • Step 3: Washing Instructions

Turn inside out. Machine or hand wash on a delicate cycle below 40°C/105°F. Do not use bleach, fabric softener or antibacterial sprays.

  • Step 4: Dry

Tumble dry or line dry and you're good to use again!

Where to Buy the Best Period Underwear?

Hello Undies comes in hipster and high waist options to suit your style. It is comfortable, thin, and super absorbent - we've mixed superior, patented fabric technology with a gorgeous design to come up with absorbent undies that exceed expectations and look pretty darn gorgeous at the same time.

They're washing machine and dryer-friendly, taking convenience to another level. Our Hello Undies are independently lab-tested and are free of potentially harmful substances such as PFOS or PFOA, AZO dyes, organic compounds, DMFu, and CMR.

Additional Hello Undies Features You'll Love

  • Equal to 5 tampons or pads
  • Moisture-wicking technology to keep you dry
  • Durable, made to last
  • Antibacterial + breathable fabric
  • Designed in New Zealand


Besides the concern about "how does period underwear work," below are some questions that women often ask when learning about period undies.

1. Is Period Underwear Sanitary?

Absolutely. These undies are crafted to keep everything clean and comfortable. Give them the love they need with the care tips to make sure they go the distance.

2. Are There Risks With Using Period Underwear?

No, if you choose a quality brand that uses independent lab testing on their materials.  The risks are minimal when used appropriately. Like with any period product, change based on flow and cleaning is key.

3. How Many Pairs of Period Underwear Do I Need?

It depends on your cycle length and personal preference. However, having a few pairs can make your life easier. Remember, many brands offer bundles at a discount. That's a win-win.

In the game of period undies, knowledge is power. With this information, you could be on the fast track to a more sustainable, comfortable, and confident period experience. Welcome to the future of menstruating, where comfy and conscious coexist—in your underwear drawer. 

Check out what are period underwear’s uniquenesses that Hello Period Offers:

  • Discount packs
    • Shop Hello Undies
      • BUY 4 AT 15% OFF
      • BUY 5 AT 20% OFF
    • BUY 6 AT 25% OFF
  • Bundles
    • Hello Undies - Black + Hello Pad Bundle
    • Hello Undies - Coral + Hello Pad Bundle
    • Hello Undies High Waist - Black + Hello Pad Bundle
    • Hello Undies High Waist - Blush + Hello Pad Bundle