What Is a Menstrual Cup? Everything You Need to Know
You have heard the term menstrual cup, but you are not completely sure what it means. Or you want to understand it better before switching.
Here is the honest answer. No pressure, just facts.
What Is a Menstrual Cup?
A menstrual cup is a reusable container made from medical-grade silicone. It is inserted into the vagina during your period and collects menstrual blood instead of absorbing it like a tampon.
It looks like a small cup or bell with a stem for grip. You fold it, insert it, let it open, and it stays in place with a light seal.
Depending on your flow, you remove it every 4-12 hours, empty it, clean it, and reinsert it.
How Does a Menstrual Cup Work?
The principle is simple:
Insert: fold the cup, guide it into the vagina, and let it open
Wear: up to 12 hours, including overnight, during sport, and while swimming
Empty: remove it and pour the blood into the toilet
Clean: rinse with water and mild soap
Reinsert: right away, or after sterilizing when needed
When it opens, the cup forms a light seal against the vaginal walls. This helps prevent blood from leaking past the cup.
LUNACUP goes one step further: the integrated drain valve lets you empty the cup without removing it, directly on the toilet. This is especially practical with a heavy flow or when you are away from home.
Benefits of a Menstrual Cup
Sustainable A menstrual cup lasts 5-10 years. That can replace up to 2,400 disposable tampons or pads.
Cost-effective over time One purchase instead of monthly restocking. A menstrual cup usually pays for itself after a few months.
Longer protection Up to 12 hours of wear. No midnight change and no hourly tampon check on heavier days.
No drying effect Vaginal fluid helps keep the mucosa comfortable. Tampons absorb it along with menstrual blood, which can cause dryness. Menstrual cups collect blood without drying the vagina.
No fiber-related TSS risk Toxic shock syndrome is associated with tampon use, and fibers can support bacterial growth. Silicone menstrual cups have no fibers. TSS is still a serious condition, so always follow wear-time and cleaning guidance.
Works for sport and water Swimming, diving, yoga, running - a menstrual cup can handle it.
Drawbacks of a Menstrual Cup
Honesty matters:
Learning curve The first insertion and removal take practice. Most users need 2-3 periods before they feel confident.
Cleaning needs water Proper cleaning requires sink access. Public bathrooms can be inconvenient.
Upfront cost Buying one cup at once feels like more than buying one pack of tampons, even though it is cheaper long term.
Not ideal for every situation If you are often traveling or rarely near a private sink, you need to plan cleaning ahead.
Who Is a Menstrual Cup For?
Almost everyone. A menstrual cup can work for:
- Beginners from the first period onward
- People with a heavy flow who need more capacity than tampons
- Active people and athletes
- Anyone prioritizing sustainability
- Anyone tired of tampon dryness
Safety note: if you have certain gynecological conditions, such as specific fibroids, a very low IUD, recent pelvic surgery, or ongoing pain, speak with a healthcare professional before use.
What Makes LUNACUP Different?
Most menstrual cups are classic silicone cups. The LUNACUP has a drain valve, so you can empty the cup without removing it.
In practice, that means:
- No full removal after only a few hours on heavy days
- Cleaner emptying in public bathrooms without a sink inside the stall
- Fewer interruptions during sport or busy days
Frequently Asked Questions
Can you wear a menstrual cup during sex? No. Menstrual cups sit in the vagina and must be removed before penetrative sex. Menstrual discs are a different product category and are designed to sit differently.
Can I sleep with a menstrual cup? Yes. You can wear it for up to 12 hours, which is enough for a full night for many people.
Is it suitable with endometriosis or PCOS? There is no general medical contraindication. Many people with endometriosis prefer cups because they hold more blood and require fewer changes. If unsure, ask your healthcare professional.
Menstrual cup or menstrual disc - which is better? They are different products for different needs. Cups usually sit lower and are easier to handle. Discs sit higher near the cervix and may be worn during sex depending on the product.
Curious?
The best way to understand a menstrual cup is to try it. Read our insertion guide, then give yourself a period without tampons.
-> Discover LUNACUP -> How to insert a menstrual cup -> How to clean a menstrual cup