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Returns The Best PFAS-Free Period Underwear (2025)
We know that many of you are concerned about the chemicals in period products. From tampons containing heavy metals to period pants containing PFAS, you're right to be concerned. The vulva area has a lot of bloodflow and thin delicate skin, so it is primed to be absorbent to whatever is around it.
In our previous post, we explored the risks associated with PFAS, the “forever chemicals” found in certain period products, tampons and pads and their potential impact on health (PFAS Chemicals in Period Products: Everything You Need to Know).
If you want to reduce your exposure to these chemicals, look for period pants brands who are transparent about their PFAS status.
How We Selected These PFAS-Free Brands & Products
To help you find trustworthy PFAS-free period pants, we compared all the big UK specialist brands, plus the favourite High St brands too. Here’s how we made our selections:
Verified PFAS-Free Products
First, we made sure each menstrual product we recommend is independently tested to be PFAS-free. The brands we chose have certifications or clear commitments to producing PFAS-free period products and incontinence products.
Free from Other Toxic Chemicals including Silver
Beyond PFAS, we avoided products with other potentially harmful chemicals, like antimicrobial silver. This ruled out quite a few period underwear from brands such as Thinx, M&S, Modibodi, Primark, Uniqlo, Bodyform and Luna (Superdrug). Our selections are crafted from safe, skin-friendly materials.
Reliable and Transparent Brands
We chose brands with a strong reputation for quality and transparency. These companies openly share their materials, production methods, and commitment to creating safe products for their customers. You can trust that they’ve gone the extra mile!
Effective, Comfortable, and Inclusive
PFAS-free underwear doesn't have to be ugly but it does need to work! Our chosen brands have a wide range of styles and sizes to suit different body types and personal needs.
Here's our choice of the best pfas-free period underwear 2024:
LoveLuna
Love Luna are an Australia brand of menstrual underwear, sold in Sainsburys and The Nappy Gurus amongst others. They have a limited range of products available but at good prices.
Materials: Just cotton or microfibre available
Absorption Levels: Absorbency mostly in gusset in most styles, may not be suitable for everyone
Size: From UK size 6/8 to UK size 20/22.
Design: 3 styles available, including bikini brief, full brief and midi brief
Price Range: £9
Guarantee: No returns or refunds
Customer Reviews: No independent reviews platform used. 'For the first time you can get great absorbency without all padding in the back part. Would love it if it had a little more front coverage however. The briefs are ok but would much prefer a more natural fibre in that part. Sizing is really good!😊'
Fluxies
Fluxies are a UK brand, who started life in 2017 as Fluxundies. They have a good range of styles and sizes available at the top end of the market.
Materials: Organic Cotton, Tencel Modal, Recycled Nylon, Microfibre
Absorption Levels: Absorbency mostly in gusset in most styles aside from full brief styles, may not be suitable for everyone
Size: From UK size 4/6 to 28/30.
Design: Good range of styles available, from thong to boxer shorts and everything in between!
Price Range: £9.99 to £27.50
Guarantee: 60 day leak free guarantee
Customer Reviews: 166 Trustpilot Reviews, rated 3.4 'Easy and quick to place the order. Fluxies updated me about delivery times, it arrived on time. The pants are stretchy and comfortable, easy to wash and wear again. Would definitely recommend.'
Shop PFAS Free Period Pants
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5 for £45
7 for £56
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5 for £45
7 for £56
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Cheeky Pants
Cheeky Pants from Cheeky Wipes have been all about 'Simple Reusables' since 2008 and are keen to make reusables available at a sensible pricepoint for as many people as possible.
In their period pants this translates to avoiding unnecessary gimmicky additives like antimicriobial silver etc. Their products are independently lab tested to be PFAS free. They've won a Queens Award for Sustainable Development too!
Materials: A range of materials including Oeko-tex certified modal, bamboo viscose, organic cotton & nylon. All vegan certified.
Absorption Levels: Cheeky Pants have absorbency from the front to the rear waistband on the majority of their pants as they feel this is really important for everyday life - menstrual blood doesn't always flow straight down, especially is you're sitting, lounging or sleeping! Light, regular and heavy flow pants available.
Size: From UK size 2 to UK size 30.
Design: A wide range of styles, from thong, through super cute briefs, boybriefs, heavy flow options and super absorbent period shorts.
Price Range: £5.50 - £13.99 with 3 for £30 available on all styles
Guarantee: 100% Happiness Guarantee, love them or your money back
Customer Reviews: 4.7 Star Rated on Trustpilot, with over 9000 reviews 'Great customer service and quick replies! The pads are great, I was looking for some made out of cotton, so I'm so glad I found these.
The period pants are amazing value for money; they perform on the same level and have similar quality to some very expensive ones that I previously purchased from another brand.
I also love that the website stipulates that all of the cheeky products are pfas free, because this is really important to me, and a lot of brands don't do this. All in all, I would definitely recommend this brand!'
Flowette
Flowette are another UK brand, who have a range of reusable sanitary pads, panty liners, menstrual cups and period pants. Limited selection of period pants available.
Materials: Cotton, Recycled Nylon, Microfibre
Absorption Levels: Absorbency mostly in gusset in most styles aside from super guard plus styles, may not be suitable for everyone
Size: From UK size 6 to 26.
Design: Limited range of styles available but they have thong, high waist and brief styles available.
Price Range: £26, although multibuy offers are available
Guarantee: 100 day risk free trial
Customer Reviews: 166 Trustpilot Reviews, rated 3.4 'Easy and quick to place the order. Fluxies updated me about delivery times, it arrived on time. The pants are stretchy and comfortable, easy to wash and wear again. Would definitely recommend.'
Wuka
Wuka are a UK brand who have also won the Queens Award for Sustainable Development. They have a good range of styles and sizes available and their products are independently tested to be PFAS free.
Materials: Polyamide, Tencel Modal, BCI Cotton
Absorption Levels: Absorbency mostly in gusset in most styles aside from overnight / maxi styles, may not be suitable for everyone
Size: From UK size 4/6 to 24/26.
Design: Good range of styles available, from thong to boxer shorts and everything in between!
Price Range: £9.99 to £21.99
Guarantee: 40 day trial period
Customer Reviews: 743 Trustpilot Reviews, rated 4.3 'The Wuka products are amazing. I have recently started using them and they are so comfortable. I would definitely recommend as you are more free to move around while wearing them and they are leak proof. These are now my go to.'
The Period Company
The Period Company are a US based brand also focusing on bringing affordable period underwear to consumers. Also tested PFAS free by Intertek, they have a good range of sizes available, however shipping is from the US and they have limited material and style choices.
Materials: Organic cotton, Nylon
Absorption Levels: Absorbency mostly in gusset in most styles aside from overnight / maxi styles, may not be suitable for everyone
Size: From XS to 6XL.
Design: Limited range of styles available, low rise, mid rise and high rise.
Price Range: £8 to £19
Guarantee: 2 period guarantee
Customer Reviews: No independent reviews available 'Not only are the products good for our bodies and actually absorbent, but they're a fair price! So cheap it makes you wonder what the catch is. The catch is- you get addicted to them!! I literally only use these and the sleepers when I'm in my period (7 days long, 3-4 heavy and a few moderate or light). As someone that hated the chemicals of tampons and pads, but never found a pair of period underwear that actually held and didn't leak after an hour (that also didn't cost $60-80) these are a prayer answered! Customer service is unmatched, and they're so comfortable!'
Ugly Pants
Ugly Pants are another UK brand focusing on sustainable period underwear in a range of pretty colours. They don't specifically say that they are PFAS free, but they do say that they undergo rigorous testing to ensure they are safe and free from harmful chemicals.
Materials: Organic cotton, Bamboo, wool (not merino wool)
Absorption Levels: Absorbency mostly in gusset in most styles aside from overnight / maxi styles, may not be suitable for everyone
Size: From 4 to 26.
Design: Limited styles available but in lots of pretty colours.
Price Range: £19 to £29
Guarantee: 60 day guarantee
Customer Reviews: Trustscore 4.6 51 reviews 'This was my first time trying out period pants and I’m converted! They’re super comfy and I felt secure that they wouldn’t leak. Can’t wait to get my hands on some more :)'
For more information on our PFAS free pants and pads feel free to browse our range of reusable period protection,.
Of course if you have any questions, please do drop us a line. The team all use the products themselves and nothing is TMI! Alternatively take a look at these articles which may be of interest:
- When can I wear period pants?
- Are period pants safe? What you need to know
- Period pants for heavy flow - the lowdown
- Period products tested with blood for the first time ever?
- Period pants - do you have to carry blood around all day?
About the Author: Helen Rankin founded Cheeky Wipes, the original reusable wipes kit back in 2008 after disposable wipes caused her eczema to flare up. 4 kids later, she went on to develop their range of 'Simple Reusables' to include period pants, reusable period kits and reusable sanitary pads. Both she and the rest of the leadership team are now navigating menopause, with all the joys it brings!
The Cheeky customer services team pride themselves on providing honest, friendly advice and just LOVE to chat pee, poo and periods all day long, helping people make the switch to reusables! The Company was recognised for their hard work in developing environmentally friendly products with the Queens Award in Enterprise for Sustainable Development in 2021.
