Women use tampons because they absorb menstrual fluid internally, allowing full freedom of movement during periods. Unlike pads, which sit outside the body, a tampon is inserted into the vaginal canal where it expands to collect fluid before it leaves the body. This makes tampons invisible under clothing, comfortable during physical activity, and practical for swimming.
How Tampons Work
A tampon is a small, compressed cylinder of absorbent material, usually cotton, rayon, or a blend of both. It’s inserted into the vagina using either a cardboard or plastic applicator, or just your fingers. Once inside, the material expands as it absorbs menstrual fluid, conforming to the shape of the vaginal canal. A thin string attached to the base hangs outside the body for removal.
The absorbent core is wrapped in a smooth layer of nonwoven fabric that helps with insertion and prevents small fibers from shedding. The whole design is simple: fluid is absorbed and held in place internally rather than collected on an external pad. Because the fluid never reaches the outside of the body, many women find that tampons also reduce odor compared to pads.
Absorbency Sizes and How to Choose
Tampons come in standardized absorbency levels regulated by the FDA, measured by how many grams of fluid they can hold:
- Light: 6 grams or less
- Regular: 6 to 9 grams
- Super: 9 to 12 grams
- Super plus: 12 to 15 grams
- Ultra: 15 to 18 grams
The general rule is to use the lowest absorbency that handles your flow. On heavier days at the start of your period, you might need a super. On lighter days near the end, a light or regular works fine. Using a tampon that’s too absorbent for your flow can make removal uncomfortable because the material hasn’t fully saturated, and it slightly increases the risk of irritation.
Swimming, Sports, and Daily Life
Swimming is one of the biggest reasons women reach for tampons. A pad can’t function in water, but a properly inserted tampon stays in place no matter how much you move. Elite athletes regularly compete while wearing tampons, and the tampon won’t dislodge during hard swimming, jumping, or running.
Beyond sports, many women prefer tampons simply because they’re invisible under tight clothing like leggings, swimsuits, or light dresses. There’s no bulk, no shifting, and no sensation of wetness. They’re also small enough to slip into a pocket, making them easier to carry discreetly than a pad.
Safety and Wear Time
The FDA recommends changing a tampon every 4 to 8 hours and never leaving one in for more than 8 hours. This guideline exists primarily to reduce the risk of toxic shock syndrome (TSS), a rare but serious bacterial infection. TSS occurs when certain strains of bacteria grow and produce toxins inside the body. A tampon can create conditions favorable to that growth by introducing small amounts of oxygen into the vaginal environment, which is normally low in oxygen.
TSS is genuinely rare. The estimated annual incidence is between 0.03 and 0.07 per 100,000 people, and that rate has been stable in recent years. The risk was much higher in the early 1980s when a brand called Rely used synthetic, hyper-absorbent materials that stayed in place far longer than cotton-based tampons. Modern tampons made from cotton and rayon are considerably safer, but the basic precautions still matter: change them regularly, use the lowest absorbency you need, and only wear them during your period.
It’s also worth noting that TSS isn’t exclusive to tampon use. Menstrual cups and even surgical wounds can cause it. The connection to tampons is the most well-known, which is why the safety guidelines focus there.
What Tampons Are Made Of
Most tampons on the market use a blend of cotton and rayon. The ratio varies by brand, with higher-cotton versions generally costing more. Some brands now offer 100% organic cotton tampons that skip synthetic fibers and fragrances entirely. Certain conventional tampons include added fragrance for deodorizing, though many gynecologists consider this unnecessary since internal absorption already minimizes odor.
Applicators are typically made from plastic or cardboard. Some women prefer applicator-free tampons, which are inserted with a finger and produce less waste.
Environmental Considerations
The average person who menstruates will use and dispose of between 5,000 and 15,000 pads and tampons over a lifetime, generating roughly 400 pounds of packaging waste. Tampons with plastic applicators contribute meaningfully to plastic waste, since the applicator is used once and discarded. The tampon itself, if made from cotton, will break down over time, but plastic applicators and synthetic components persist in landfills for centuries.
This footprint has driven interest in alternatives like organic cotton tampons (which are plastic-free but still disposable), menstrual cups, and reusable period underwear. For women who prefer tampons, choosing cardboard applicators or applicator-free options cuts down on plastic waste significantly.
How Tampons Compare to Other Options
Tampons are one choice among several, and most women settle on a preference based on comfort, lifestyle, and flow. Pads require no insertion and work well for people who find tampons uncomfortable or who have lighter periods. Menstrual cups are reusable silicone devices that collect rather than absorb fluid, lasting years and producing almost no waste. Period underwear has built-in absorbent layers and works as either a backup or standalone option on lighter days.
Many women use a combination. Tampons during the day for activity and discretion, pads at night for the comfort of not worrying about wear time, and lighter products toward the end of their period. There’s no single right answer, and the best product is whichever one fits your body, your routine, and your flow.