Non-Toxic Period Underwear Is Having a Moment This EOFY — Here's Why
If your group chat has been blowing up with "EOFY SALE" texts and you've been wondering what on earth that even means — you're not alone. But here's the version that actually matters to your underwear drawer: it's the perfect excuse to finally swap whatever you're currently wearing on your period for non-toxic period underwear that's actually good for your body. Right now, everything sitewide at Fri Period is 20% off for a limited time, which makes this one of the easiest moments all year to make the switch.
We know "non-toxic" gets thrown around a lot in marketing (we see you, greenwashing). So let's unpack what it actually means for period panties, why it matters for something that sits against your skin for hours, and why this sale is the nudge a lot of you have been waiting for.
Quick note: this article is general information, not medical advice. If you have specific health concerns — especially around hormones or skin sensitivities — please chat with your GP or a qualified healthcare professional.
Wait, What Is EOFY (And Why Should Your Underwear Drawer Care)?
EOFY stands for End of Financial Year — it's an Australian thing, running through to 30 June, where businesses (us included) clear out stock and offer their best deals of the season. Think of it as a financial reset button for the country, and a pretty good excuse to reset a few things in your own routine too. Like, say, finally replacing period products that have seen better days.
For the next little while, that reset comes with 20% off everything sitewide. No need to overthink it — just a genuinely good window to stock up on reusable period underwear before prices go back up.
Why "Non-Toxic" Actually Matters When It Comes to Period Underwear
Let's get real for a second: your vulva is one of the most absorbent parts of your body. Whatever sits against it for hours during your period flow doesn't just stay on the surface — it can be absorbed. So when we talk about non-toxic period underwear, we're not just chasing a buzzword. We're talking about what you're choosing to put against your skin, on repeat, every single month.
What's Sometimes Hiding in Period Products
Some reusable period underwear and other menstrual products on the market rely on waterproof or moisture-wicking layers made with PFAS — short for per- and polyfluoroalkyl substances, and better known as "forever chemicals" because they don't break down in the environment. They've been linked to hormone disruption and other health concerns, which is exactly the kind of thing you don't want anywhere near your reproductive health, whether you're using period underwear, disposable pads, or anything in between.
How Fri Period Keeps Things Clean
Here's where we come in. Fri Period underwear is made without intentionally added PFAS, using:
- 95% organic cotton, 5% spandex for the inner lining that actually touches your skin — soft, breathable, and body-safe materials even on sensitive days
- 95% natural bamboo, 5% spandex outer fabric, which is naturally moisture-wicking and helps keep you fresh
- A multi-layer absorbent core that locks in moisture while staying breathable, giving you leakproof period underwear without synthetic waterproofing shortcuts
Our fabrics are also independently Oeko-Tex Certified to STANDARD 100, meaning they've been tested by third-party labs against a long list of harmful substances. We'll always be upfront with you, though: no brand can promise zero environmental trace of something as widespread as PFAS — these chemicals are unfortunately everywhere, from rainwater to soil. What we can promise is that we don't intentionally use them, and we back that up with real, checkable certifications rather than just a nice-sounding label.
Our founder Nina put it simply when she started the brand:
"I have PCOS and adenomyosis. My hormones are already struggling — I don't want to wear something that could throw them off even more."
That's the whole reason Fri Period exists. Not as a marketing line, but as an actual answer to a problem Nina couldn't solve for herself anywhere else.
Read about what goes into our non-toxic period underwear here.
What 20% Off Sitewide Actually Means for You
Practically speaking? It means this is one of the cheapest times all year to build out a full rotation of non-toxic period underwear — without the price tag making you wince. Whether you're buying your very first pair to test the waters, or finally retiring some questionable old menstrual products, the sale takes a bit of the financial pressure off trying something new.
It's also a smart time to stock up if you've already converted (hi, you know who you are) — because period underwear isn't a "buy once" purchase. Having enough pairs across different absorbency levels for your whole cycle, especially on heavy flow days, makes the switch a lot more sustainable and a lot less laundry-heavy.
Which Style Should You Grab While It's On Sale?
Not everyone's cycle — or wardrobe — looks the same, so here's a quick breakdown by absorbency levels and fit:
- Classic Period Brief — high-waisted, soft, and absorbent enough to handle heavy flow days without fuss
- Period Boxers — for anyone who prefers more coverage and a snugger, sport-style fit
- Low-Rise Hipster — a flattering, low-rise cut that still delivers serious period performance
Not sure where to start? Browse the full Shop All collection while the sale's live to compare styles side by side.
Making the Switch Doesn't Have to Be Complicated
If you're nervous about moving away from disposable pads and liners (or swapping out a less-than-ideal pair of period underwear you already own), it's genuinely simpler than people make it sound:
- Pick your size using our size guide — getting the fit right makes all the difference for absorbency and comfort
- Wear it like normal underwear — no extra steps, no learning curve
- Rinse after use, then machine wash on a delicate cycle — it's fully machine washable
- Skip the fabric softener and the tumble dryer — both can wear down the absorbent layers over time, so air drying is your best friend
- Repeat — that's genuinely it
Curious about the full mechanics of how the layers work together to absorb menstrual blood and keep you dry? We go deeper on that over on the Fri Blog.
The Bottom Line
Periods already ask enough of us without adding "worry about hidden chemicals" to the list. Choosing non-toxic, reusable period underwear is one small swap toward more sustainable period care — and with 20% off sitewide for a limited time this EOFY, there's rarely been a more affordable moment to make it happen.
Ready to make the switch? Shop the EOFY sale now and grab 20% off non-toxic, certified period underwear before it ends.
FAQs
1. What does "non-toxic" period underwear (sometimes called period panties) actually mean? It means the underwear is made without intentionally added harmful substances like PFAS, dyes, or heavy metals, and is independently certified — like Oeko-Tex Certified STANDARD 100 and GOTS — rather than relying on marketing language alone.
2. How long does the Fri Period EOFY sale run for? The 20% off sitewide sale is on until July 4. Check the site directly for the current offer, as availability and timing can change.
3. Is non-toxic period underwear good for heavy flow days? Yes — Fri Period offers different absorbency levels across our styles, from light spotting through to heavy flow, so you don't have to choose between safer materials and reliable protection.
4. Will switching from disposable products to period underwear feel different? It might take a cycle or two to adjust, but most people find it feels just like wearing regular underwear — minus the extra steps that come with disposable pads or liners.
5. How do I look after my period underwear so it lasts? Rinse after wearing, then machine wash on a delicate cycle. Avoid fabric softener and skip the tumble dryer — air drying keeps the absorbent core working properly for longer.
