The Discreet Days Set is for when you want to feel like you’re wearing nothing at all (tight pants approved). Buy the set, save $9.

Your daily go-to, sorted

For when you want reliable protection without the bulk.
The Scarlet Cup handles the inside job, while the G-String has your back with soft, breathable backup and no VPL.

Super soft GOTS Certified Organic Cotton
Toxin-free, PFAS-free, and totally reusable
No leaks, no pads, no plastic waste
Perfect for everyday wear and moderate flow

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Your Questions, Answered

How do they work?

Scarlet Period Underwear is designed to fit like normal underwear and features multi-layered leak-proof technology that wicks away moisture, absorbs fluid, and contains it to keep you dry and protected.

The built-in leak-proof technology is harder working than disposable pads which means it can safely hold more liquid and last for years not hours. Loved by all; you can read some reviews.

What does the absorbency level mean?

Super Light: Holds up to 1 teaspoon, which is equal to less than one regular tampon. Think of it as a new-age panty liner, so it’s great for spotting, light leaks and discharge. Try: Invisible Thong

Light: Holds up to 3 teaspoons, which is equal to 2 regular tampons or one pad. This is for light days to save you from pesky drips, discharge, and lighter flows. Try: G-String or Bikini Brief in Light-Moderate

Moderate: Holds up to 5 teaspoons, which is equal to 3 regular tampons or 2 pads. Go for this on moderate days or as extra defence on heavy days with our Period Cup. Try: High-Waisted Brief or Bikini Brief in Moderate-Heavy

Heavy: Holds up to 7 teaspoons, which is equal to 4 regular tampons or 3 pads. Our heavy hitters are great to wear on their own, day or night. Try: Boyshort or Period Cup

How do I wash them?

After use, rinse them in cold water (we recommend in the shower) until they run clear. Then, machine wash in cold water with mild detergent (no bleach!). Try our Laundry Bag to safeguard them on laundry day. Then just hang out to dry (the sunnier the better) or tumble dry on low - that’s it!

TIP: If it’s your first wear, pop them in the washing machine with your next cold cycle - washing them before wearing activates their absorbency even more.

How do I pick the right size for me?

We get it, sizing for bottoms is anything but standardised. Which is why this size guide will help break it down for you. Make sure to check both our numeric and letter sizing so no confusion (ie. our large is a 12).

When in doubt, feedback tells us better to size up. Still confused? You can also email us for help at support@scarletperiod.com.

What is the Scarlet Period Cup?

It is a reusable period cup made of 100% soft medical-grade silicone. It is worn internally like a tampon but collects, rather than absorbs, your menstrual flow.

As it has more than 2.5x the capacity of a regular tampon, you can safely wear it for up to 8 hours before emptying. The Scarlet Period Cup is designed for ultimate comfort. Once your cup is in place, you shouldn't feel a thing.

Click to read more about Period Cups.

How do I empty a period cup in a public bathroom?

We get asked this a lot. Take out your Scarlet Period Cup and empty it into the toilet. Our Cup & Hand Wash is a pH-balanced, low-foaming wash designed to clean your Scarlet Period Cup. Ensure that the holes at the side of the cup are clear before reinserting the cup. No mess, no fuss.

★★★★★