Search for the period underwear market size and you’ll find a dozen different answers. One report says a few hundred million dollars. Another talks about billions. If you’re trying to plan a brand, that isn’t much help.
So this is a short guide to what the recent reports actually say, what’s changing on the chemical regulation side, and what we’d check before ordering from any factory, including ours. If you’d rather start by seeing what we make, our OEM underwear products page shows our available product range and customization options.
In this guide
1. How Big Is the Market?
Smaller than a lot of blog posts make it sound, and growing fast. Two reports published in June 2026 give a good picture. They don’t match exactly, because each firm counts the category a little differently, but they land in the same area.
| Indicator | Grand View Research (June 2026) | Future Market Insights (June 2026) |
|---|---|---|
| Global market valuation | US$157.0 million in 2025; US$183.6 million estimated for 2026 | US$200 million in 2026 |
| Forecast | US$700.2 million by 2033 | US$1,100 million by 2036 |
| Category CAGR | 21.1% (2026–2033) | 17.0% (2026–2036) |
| Retail channel | Offline channels led with about 65% of 2025 revenue; online is the fastest-growing channel (21.3% CAGR) | Online retail about 38% of 2026 demand |
| Dominant product segment | Brief styles lead (29.5% share in 2025), favored for moderate-to-heavy flow; bikini styles are growing fastest (21.5% CAGR) | Reusable products about 69% of 2026 demand; overnight products the largest absorbency segment (41%) |
Sources: Grand View Research, Period Panties Market Report 2026–2033 and Future Market Insights press release, June 22, 2026. The two firms use different definitions, base years and forecast periods, so their figures are not directly comparable.
Put simply, the market is somewhere around US$180 to 200 million this year and growing roughly 17 to 21 percent a year. Other reports show higher or lower numbers, so don’t be surprised when you see something different elsewhere.
Both reports say North America is still the biggest region. Grand View Research puts it at about 39% of 2025 revenue and Europe at about 32%. Asia-Pacific is smaller but growing faster, at about 21.7% a year in the same report. Future Market Insights singles out India, at about 24.9% a year.
The two sources disagree on channels. Grand View says most sales still happen offline, in pharmacies, supermarkets and lingerie shops, while online grows fastest. Future Market Insights gives online a 38% share. Either way, you’ll probably want both eventually, so don’t build a plan around one.
2. PFAS Rules
If there’s one thing we’d tell a new brand to look into before anything else, it’s this. PFAS are chemicals used in some textile finishes to repel water or stains, and some leak-resistant constructions have used them. Regulators have started to restrict them in clothing.
- California (AB 1817): since January 1, 2025, new textile articles with regulated PFAS can’t be made, distributed or sold in the state. The limit is 100 ppm total organic fluorine, and it’s due to drop to 50 ppm on January 1, 2027. Manufacturers also have to give sellers a certificate of compliance.
- New York: since January 1, 2025, apparel with intentionally added PFAS can’t be sold. The law’s definition of apparel includes undergarments.
- Other US states: more states have passed or are working on their own limits, with different scopes and dates.
- European Union: REACH already restricts some PFAS groups. A broader restriction is still under discussion, so check where things stand for the countries you sell in.
Don’t trust a “PFAS-free” line on a spec sheet just because it’s there. Ask what test method was used, whether the report covers the finished garment or only a fabric, and what exactly the claim covers. If you can’t show paperwork, retailers in these markets will probably pass.
We hold a PFAS-free certificate, and you can review it when you ask for samples or a quote. It covers a defined scope, so we’ll tell you which fabrics and constructions it applies to for your project. If you’re also weighing skin-safety standards, our guide to OEKO-TEX Class I vs Class II for period underwear explains the difference between the classes.
3. Buyers Want Proof
People have seen “eco-friendly” on so many labels that it doesn’t mean much anymore. What gets attention now is something specific that someone can check. GOTS for organic textiles and OEKO-TEX STANDARD 100 for tested materials are two examples. Before you decide which one fits your range, read our comparison of OEKO-TEX Class I vs Class II period underwear. For the wider picture of how materials, layers and quality control fit together, our underwear manufacturing process and FAQs page is a good place to start.
A certificate only covers what it says it covers, so match each claim on your packaging to a real document. Reusable products can cut down on single-use waste too, but how much depends on how long people keep using them and how they wash them.
4. More Than Just Briefs
Period protection is turning up in more products every year. Swimwear, sportswear, teen sizes, postpartum styles and incontinence-related pieces are all getting attention. Each one has its own problems to solve.
Swimwear has to work when it’s soaked, which changes the construction completely. Sportswear has to deal with movement, sweat and how long someone stays active. Teen and postpartum styles need different fit and coverage. A gusset that works well in everyday briefs won’t automatically work in any of these, so each new product needs its own development and testing.
5. Where the Demand Is
| Region | Market maturity | What is shaping demand | Features often valued |
|---|---|---|---|
| North America | High | Strong DTC brands, growing retail presence, PFAS and chemical rules | Thin profile, high absorbency, discreet seams, compliance documents |
| Europe (EU and UK) | Moderate to high | Environmental awareness, chemical regulation, interest in certified materials | Organic cotton, plant-based fibers, verified certificates |
| Asia-Pacific | Emerging, fast growing | Rising incomes, e-commerce growth, wider acceptance among younger shoppers | Lightweight, breathable knits, seamless and attractive designs |
| Latin America and Middle East/Africa | Early stage | Cross-border e-commerce, interest in cost-effective reusable options | Value packs, durable wash performance, higher capacity |
This is a general guide. Before you commit to a range, check the demand and the rules in the country and channel you’re actually selling into.
6. What to Do Before You Order
If you’re about to start sampling, here’s the order we’d go in.
- Ask for the chemical test reports first. They should cover the finished product, including PFAS or total organic fluorine testing if your market needs it.
- Start small. A few well-tested styles are safer than a big range with patchy testing. Use the factory’s existing constructions where they fit, and only customize where it really matters.
- Find out how absorbency and wash durability were tested. “Lasts 30 washes” means nothing without a test method behind it.
- Show what’s inside the product. Layer diagrams, honest care instructions and certificate references on your product pages help customers trust you.
- Plan for each sales channel. A DTC brand, a pharmacy chain and a marketplace seller need different packaging, documents and prices.
- Get MOQ and lead time for your exact style. They change with fabric, color, print, packaging and construction.
7. Picking a Factory
A good factory helps you turn an idea into a product you can sell, with the documents to back it up. Shanhao holds a GOTS Version 6.0 scope certificate (No. 23-485657), a PFAS-free certificate, and other third-party certificates that can support your project. You can read more about Shanhao’s factory and manufacturing capabilities or look at the certificates section on our homepage.
Each certificate has its own scope. Tell us your fabric, style and target market at the start, and we’ll confirm which documents apply to your project.
Common Questions
How fast is the period underwear market growing?
Recent 2026 reports project about 17% to 21% a year (Future Market Insights and Grand View Research). Other forecasts are higher or lower because they define the category differently, so look at more than one source.
Do PFAS rules apply to period underwear?
They can. California’s textile law covers textile articles broadly, and New York’s apparel law includes undergarments. Rules differ by state and country, so check each market you sell in and ask your manufacturer for test reports.
Which region should a new brand start with?
North America and Europe are the most established, and Asia-Pacific is expected to grow quickly. It depends on your channels, your budget and whether you can meet each market’s documentation requirements.
Are period swimwear and activewear worth developing?
They can be, especially if you serve a specific community, but they need their own construction and testing. Start with the customer and the activity, not the trend.
Can I develop a private label period underwear line with Shanhao?
Yes. OEM/ODM development can include fabrics, styles, colors, labels, packaging and internal construction, depending on our capabilities and minimum order requirements. Browse our OEM underwear products to see the options.
Bottom Line
The category is growing, and it’s still early enough for a new brand to find its place. The brands that last will be the ones with a clear customer, materials they can prove, claims they can back up, and a factory that can provide the documents.
If you’re ready to talk, browse our OEM underwear products, read about Shanhao’s factory and manufacturing capabilities, or contact our team and tell us what you have in mind.
Planning a Period Underwear Line for 2026?
Tell us about your target market, product ideas, materials and expected order quantity, and our OEM/ODM team will help you plan the right construction and documentation.