This article is reviewed by medical professional Dr Yuri Ochiai Martí
Menstruation is a natural part of life, but managing it comfortably and hygienically can sometimes be a challenge. Thankfully, period underwear has revolutionised the way people experience their periods, providing a reusable, sustainable, and leak-proof option. However, to get the most out of period underwear, it's essential to understand how long it should be worn, what factors affect its effectiveness, and how to maintain optimal vaginal health while using it.
At Ruby Cup, we are committed to not only providing innovative menstrual solutions but also ensuring that you have the knowledge you need to take care of your body. That’s why we collaborated with Dr. Yuri to compile this comprehensive guide on period underwear usage and vaginal health.
Read on to discover how to maximise comfort, maintain hygiene, and support your well-being with period underwear!
How Long Can You Wear Period Panties For?
Period underwear is generally safe and comfortable to wear for 8 to 12 hours. So you can wear them all day long or overnight without problems. For hygiene reasons and to prevent bacteria build-up or irritation, you should not wear them any longer than that. This is the general advice, but how long you can wear them can depend on a few factors:
1. Menstrual Flow
If you have a very heavy flow, it could be necessary to replace the underwear more frequently, to maintain hygiene and prevent leakage.
2. Absorbency Level of Period Underwear
If you're wearing underwear with light absorbency, you’ll likely need to change it more often. The absorbency capacity of period underwear varies by design and brand.
At Ruby Cup we offer 2 absorbency levels:
- Our Flow Freedom panties, which hold up to 50 ml (the equivalent of 3 tampons), so they’re perfect for heavier flows and will keep you covered all day.
- A pair of Fearless panties is equivalent to 2 light tampons or pads and is perfect for lighter flow days. They’re super thin, just like regular underwear, and have a cute, playful leopard print design.
3. Leakage & Odor Control
If you notice wetness or detect an odor before the 8 to 12-hour mark, it's advisable to change into a fresh pair to maintain hygiene and comfort. However, using high-quality period underwear, like Ruby Cup’s breathable, multi-layered fabric, can greatly help with odor control.
4. Skin and Vaginal Health
If you have sensitive skin or are prone to yeast or bacterial infections, changing underwear more frequently can help prevent irritation. Signs of irritation include itching, redness, burning, or discomfort. If you experience thick or foul-smelling discharge, consult a healthcare professional.
Why Breathability Matters:
To ensure comfort and reduce irritation, period underwear should be made from breathable and possibly natural fabrics. These materials allow air circulation, prevent moisture buildup, and help control odor.
When moisture accumulates, it can create an environment conducive to yeast and bacterial growth, leading to discomfort and infections. Choosing high-quality, breathable period underwear—like the Ruby Cup Flow Freedom range—can support your intimate health while keeping you comfortable.
How to Maintain Vaginal Health While Using Period Underwear:
In addition to proper period underwear usage, making healthy lifestyle choices can promote overall vaginal health:
✅ Eat a Balanced Diet: A nutrient-rich diet with vegetables, fruits, proteins, and healthy fats supports a balanced vaginal microbiome and reduces infection risk.
✅ Consider Probiotics: Probiotics containing Lactobacillus crispatus may help maintain a healthy vaginal microbiome, beneficial for those prone to infections.
✅ Practice Good Hygiene: Wash your period underwear with gentle, fragrance-free detergents and allow them to fully dry before wearing again to prevent bacteria buildup.
FAQs: Your Period Underwear Questions Answered
Can period underwear replace pads and tampons entirely?
Yes, period underwear can completely replace pads and tampons. Many people find them more effective and definitely more comfortable. Some prefer to use them as backup, especially for extra security when using a menstrual cup or disc. For example, our Fearless line is so thin and comfortable, you’ll barely notice you’re wearing it and it’s a perfect match to wear with a cup for added security in case of leaks.
Do you wear a pad with period underwear?
No, you don’t need to wear a pad or panty liner with period underwear. They are designed to be used on their own. Our Flow Freedom period panties can absorb the same as 3 maxi pads, and they’re a healthier and more sustainable option.
How do I know when to change my period underwear?
If your underwear feels wet or you notice an odor, it's time to switch to a fresh pair.
How do I wash period underwear?
Rinse with cold water after use, then wash with mild detergent on a gentle cycle. For best results and to extend their lifespan, air dry your period underwear.
Are Ruby Cup period panties safe for sensitive skin?
Absolutely! Our underwear is made from breathable, high-quality fabrics that are gentle on the skin and free from harmful chemicals.
How long do period panties last?
It depends on the materials and their quality. A pair of our premium Ruby Cup Period Underwear, when cared for properly, can last up to 4-5 years. We recommend owning a few pairs to ensure you always have a fresh one to wear while the others are being washed.
Remember to listen to your body, choose breathable fabrics, and make healthy lifestyle choices to support your well-being.
Written in collaboration with Dr. Yuri Ochiai Martí
Yuri Ochiai Martí is a family physician, integrative doctor, and acupuncturist with Japanese heritage. She has been immersed in holistic medicine since childhood, which has shaped her understanding of health as a whole concept that considers not only the body but also the mind and spirit. These disciplines allow her to address health concerns in a respectful, person-centered way, emphasizing emotional well-being, lifestyle changes, and nutrition as keys to achieving greater balance. Over the past few years, she has specialized in endometriosis and integrative endocrinology, deepening her knowledge and experience in these areas as part of her ongoing medical journey.
