Period panties are absorbent, washable underwear that you wear instead of, or as well as, pads and tampons. They’re reusable, and nothing goes inside your body. This guide is unsponsored, and we don’t recommend any brand.
Good to know
| Period panties | |
|---|---|
| Wear time | Often 8 to 12 hours, depending on flow and product |
| Reusable | Yes, after washing |
| Internal? | No |
| Best for | Lighter days, overnight back-up, or people who prefer external products |
What to check before buying
- Absorbency. Look for a stated capacity, and treat claims as the manufacturer’s own.
- PFAS. Harvard Health advises checking that period panties are free of these chemicals. Look for a clear statement, ideally backed by independent testing.
- Fit. Protection depends on a snug fit around the legs and waist.
- Care. Check the wash and drying instructions, because they affect how well the absorbent layer lasts.
Who they may suit
Harvard Health notes that period underwear comes in a wide range of colours, cuts and absorbency levels, and that you can mix and match products according to your flow. It can also help with discharge or mild urinary incontinence.
They may suit you if you’d rather not use internal products, or want extra protection overnight or on lighter days.
Cost
Reusable products cost more to begin with. Harvard Health’s chart lists period underwear at around $10 to $35 a pair, but says the total cost isn’t clear, because it depends on how many you need and how long they last. Check current prices, as these figures date from its 2022 comparison.
Using them
Change them according to your flow and the product’s instructions. Rinse them in cold water after wearing, then wash as directed.
How they compare
| Period panties | Period cup | Pads and tampons | |
|---|---|---|---|
| Worn | Outside the body | Inside the vagina | Pads outside, tampons inside |
| Reusable | Yes | Yes | Usually no, although washable pads exist |
| Upfront cost | Higher | Higher | Lower |
If you often need to use two products at once, or change them every 1 to 2 hours, that can be a sign of a heavy period. It’s worth speaking to a GP, especially if it’s affecting your daily life.
Other options
Compare period cups and period swimwear.