Teen period underwear reviews: What girls are saying

Mar 21, 2025

Periods, often a source of questions and worries, are a major milestone for young girls and teens. Marking the start of puberty and adolescence, getting your period can change how a girl feels about herself and her body.

It’s important to be well-equipped during your period and to rely on trusted menstrual products (panties, cups, swimwear, washable pads, or menstrual discs)—especially during adolescence! With so many hygienic protection options (washable or disposable), menstrual panties and menstrual lingerie naturally stand out as a great option for all teens.

Louloucup, a French brand offering quality menstrual products, has a special line for teens: a selection of our best period panties for teens available starting at XXS or size 32 for the youngest and smallest teens.

Today let’s talk about experiences and testimonials. It’s essential to be well-informed before placing your order. Being able to rely on authentic testimonials helps clear up doubts and ease worries.

Reviews from teens, clear answers to frequently asked questions, and Louloucup’s commitment to teens are all featured in this new article!

Period underwear: what teenage girls are saying

When it comes to using period underwear, feedback from young users varies. However, there is a clear consensus on several key points:

Comfort

For many people, the main advantage of washable period underwear or menstrual panties lies in their comfort. Unlike traditional feminine hygiene products, which can sometimes be irritating or uncomfortable, LouLoucup teen period panties feel just like regular underwear.

The fabric, made of organic cotton, polyamide, elastane, and a delicate dotted mesh, offers both softness and durability while perfectly adapting to every body shape.

"I was pleasantly surprised by how comfortable my period underwear is. You almost forget you're wearing special protection!"

Discreet and invisible

Another feature that teenagers love about Louloucup period panties is how discreet they are. Period underwear is designed to be invisible under clothes, which is a huge plus for many!

With Louloucup's absorbent period underwear, young girls can feel confident and comfortable, no matter what they’re wearing. Whether it’s gym class or their favorite sports session, they can wear their favorite fitted leggings without worrying about visible lines.

For perfect invisibility, we recommend you try the Liv period underwear (available in XXS) for very heavy flow, or the Lucie style (also available in XXS) for medium flow. Both styles are seamless or have ultra-flat seams. They’re super thin—completely unnoticeable under clothes!

Aesthetics

Aesthetics are also important: stylish and modern, these teen period panties come in multiple colors and styles, so everyone can find the one that best matches their look. Black seamless, black lace, or cute stripes—it’s your choice!

Effective protection

Protection and absorbency are obviously major concerns. LouLoucup period panties, especially the Mathilde model, are specially designed to handle heavy flows.

With an absorption capacity equal to five tampons, washable period underwear provides long-lasting protection, even on your heaviest days.

Mathilde is ideal for:

Heavy flows and days with very heavy bleeding,
users who wear a copper IUD,
and postpartum users to manage lochia.

"The Mathilde underwear is amazing for heavy flows. I have adenomyosis and even with treatment, it's hard to manage. With these, my days have completely changed!"

Convenient

Another point often appreciated by teenagers is the practical aspect of period underwear. Teens especially like that this healthy, eco-friendly alternative is so easy to use: you just slip them on like any regular underwear and go about your day as usual! No need to run to the bathroom multiple times a day to change!

Eco-friendly

Beyond practical aspects, choosing period underwear is an eco-friendly decision. By opting for a reusable solution, young women actively help reduce waste from disposable products. This responsible choice is especially valued by a generation that cares about the environment.

Self-confidence

And finally, another key benefit: confidence. Wearing period underwear can also have a positive impact on self-esteem. By offering reliable and discreet protection, these period panties allow teens to focus on their daily activities without worrying about leaks or period-related discomfort. This confidence boost is especially important during adolescence.

Questions teens often ask

Switching to a new period protection naturally raises some questions.

How do you choose your size and style?

Choosing the right size is crucial to ensure comfort and effectiveness. LouLoucup offers a wide range of sizes, from XXS to XXXL, to suit all body types.
For teenagers, the Mathilde model also comes in a special version, including XXS (size 32), for younger girls.

Tip: Take your measurements and check the size guide on the website to find the perfect pair of panties for you.

How do you wash and care for your period underwear?

Taking care of your period underwear is simple and cost-effective. Just rinse it in cold water after use and machine wash on a low temperature with similar colors. To extend the life of the absorbent fabric, avoid using fabric softeners, as they can affect its performance.

Can you wear period panties at school or during sports?

Absolutely! Period underwear is designed to fit any situation—whether it’s a school day, a sports class, or even a night’s sleep. Thanks to their ergonomic design and comfortable materials, they provide maximum protection without limiting your movement.
Expert opinion: Many gynecologists recommend period underwear for their reliability and adaptability, especially for heavy flows.

Are period panties suitable for heavy flows?

Yes, especially the Mathilde and Liv models from LouLoucup. With their exceptional absorbency (equivalent to five tampons), this period underwear is specially designed for very heavy flow days. They retain leaks effectively with no risk of overflow, ensuring comfortable protection all day and even overnight.

How does it feel to wear menstrual underwear?

Wearing a LouLoucup period panty feels very similar to wearing regular underwear. The organic cotton lining is incredibly soft, while the discreet, thin absorbent fabric doesn’t add any extra bulk. This means you get optimal protection with no compromise on comfort or style.

Spotlight on the Mathilde model from Louloucup

Among the entire range, the Mathilde style stands out for teens with a very heavy flow. Become an expert on this amazing black lace period underwear.

Technical features and benefits

High absorbency.
The Mathilde period underwear holds a large amount of flow, thanks to an extended absorbent fabric that covers most of the underwear, offering protection equivalent to five tampons.
Specially designed for heavy flows. Perfect for users with a strong menstrual flow, especially if you have a copper IUD or are in the postpartum period.
Quality materials.
Made of polyamide, elastane, and plumetis on the outside, with an interior of 95% organic cotton and 5% elastane, Mathilde ensures optimal comfort and outstanding durability. 
Refined look. The model comes in solid black with an elegant dotted mesh trim and features a high-waisted cut that perfectly hugs your figure. For medium flow, a blue version called Lily is also available.
Made in Europe.
Designed in France and made in Portugal, the Mathilde underwear reflects a commitment to ethical, high-quality production.

Reviews for the Mathilde panties

"The new Mathilde underwear is amazing for heavy flows. I have adenomyosis, and even with treatment, it’s hard to manage. With Mathilde, it’s been a game-changer for me. It lasts all day with no worries or discomfort. The quality is top-notch. I’m so satisfied I’m buying several pairs to get through days and nights during this always-challenging time. Thank you, Louloucup!"

Mathilde: what our users love most

The experience young girls have with LouLoucup’s menstrual underwear, especially the Mathilde model, highlights several key points:

Comfort and discretion.
Menstrual underwear provides effective protection while remaining as comfortable and invisible as regular underwear.
Optimal protection for heavy flow.
The Mathilde model, specially designed for heavy periods, ensures reliable absorbency and extra security, even on your heaviest days.
Ecological and ethical commitment.
By choosing reusable protection, teens help reduce waste and take an environmentally friendly approach.
Personalized support.
With expert advice and user feedback, LouLoucup creates a community of young women who are informed and confident in managing their periods.

This modern, eco-friendly alternative is a real revolution for those looking to experience their periods with peace of mind while also helping the planet.

Final word: Yes to fun, reliable period panties for teens!

With Louloucup, it’s easy to find the best period underwear for teens! Check out all our styles and their availability now on our online shop.

Choosing period underwear isn’t just about style or trends—it’s a decision that impacts daily life, health, and well-being for young girls. By choosing a reusable and eco-friendly option, teens are taking a responsible, modern approach that helps them experience their periods with more peace of mind, comfort, and confidence.

Thanks to experiences shared by users, it’s now possible to answer all your questions and fully enjoy the benefits of this innovative menstrual protection. Whether you’re a young girl looking for your first period underwear or an experienced user wanting to discover new styles, the LouLoucup world welcomes you with care and expertise.

Don’t wait—explore our full range today, try the Mathilde model for very heavy flow, and join a vibrant, engaged community that values freedom, self-confidence, and respect for the environment. Also check out our menstrual swimsuits for teens to make your life easier—even at the pool! Share your feedback, ask questions, and let yourself be guided by products designed to simplify your life.

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