Feminine hygiene products are items designed to manage menstruation, absorb light discharge, or clean the external genital area. The most common categories include sanitary pads, tampons, menstrual cups, menstrual discs, period underwear, panty liners, and intimate cleansing products like wipes and washes. Some of these are single-use, others are reusable, and they vary widely in how they work, how long you can wear them, and what they’re made of.
Worth noting: the term “feminine hygiene products” is still widely used in stores and marketing, but the industry and health organizations are increasingly shifting toward “menstrual products” or “period products” as more neutral, inclusive language.
Pads and Panty Liners
Sanitary pads are the most straightforward option. They stick to the inside of your underwear and absorb menstrual blood externally. Pads come in a range of absorbency levels, from light to heavy, and in varying thicknesses. Thinner pads work for lighter flow days, while thicker overnight pads handle heavier bleeding and offer more coverage. Some have adhesive “wings” that wrap around the sides of your underwear to prevent leaks.
Panty liners look similar but are thinner and smaller. They’re built for light absorbency, making them useful for daily vaginal discharge, the very beginning or end of a period when flow is minimal, or as a backup layer when using a tampon or menstrual cup. Both pads and liners should be changed regularly throughout the day, even on light days, to keep the area dry and reduce irritation.
Tampons
Tampons are small, compressed cylinders of absorbent material, typically cotton, rayon, or a blend of both. You insert them into the vaginal canal, where they expand to absorb menstrual blood before it leaves the body. They come with or without applicators and in several absorbency sizes.
The FDA classifies tampons as Class II medical devices, which means manufacturers must meet specific biocompatibility and safety testing requirements before selling them. One key guideline: tampons should be changed every 4 to 8 hours and never left in for more than 8 hours. Using the lowest absorbency that handles your flow is the safest approach.
The main health concern with tampons is toxic shock syndrome (TSS), a rare but serious bacterial infection. TSS became widely known in the late 1970s and early 1980s when highly absorbent tampons were linked to outbreaks. Since those products were pulled from the market, menstrual TSS has dropped to roughly 0.5 to 1.0 cases per 100,000 people, and deaths from menstrual TSS are now extremely rare. A study of 120 women diagnosed with menstrual TSS between 2005 and 2020 reported zero deaths. The risk increases with higher-absorbency tampons and with leaving a single tampon in place for extended periods.
Menstrual Cups and Discs
Menstrual cups are small, funnel-shaped devices made of medical-grade silicone, rubber, or latex. Unlike pads and tampons, cups collect blood rather than absorb it. You fold and insert the cup into the vaginal canal, where it creates a seal. Depending on your flow, a cup can stay in for 6 to 12 hours before you need to remove, empty, and rinse it. Because cups collect rather than absorb, there’s a lower chance of bacterial buildup compared to tampons. Most cups are reusable and last for years with proper care.
Menstrual discs work on the same collection principle but have a different shape. They’re thin, round, and flexible, made of medical-grade silicone or polyethylene. A disc sits higher in the vaginal canal, tucked behind the pubic bone, and can be worn for 8 to 12 hours. Some discs are disposable, while others are reusable.
Period Underwear and Reusable Pads
Period underwear looks like regular underwear but has built-in absorbent layers and a waterproof barrier to catch menstrual blood. Absorbency varies by brand and style, with some designed for light flow and others capable of replacing a pad entirely on moderate days. After wearing, you rinse them in cold water and then wash them with your regular laundry.
Reusable cloth pads function like disposable pads but are made of washable fabric. They snap or clip onto underwear and come in different sizes and absorbency levels. After use, you rinse out as much blood as possible in cold water (hot water sets stains) and toss them into a regular laundry load at cold or warm temperatures. Avoid fabric softener, high heat in the dryer, and conventional stain removers, which can damage the waterproof membrane. Most reusable pads actually become more absorbent after several washes.
Both options reduce waste significantly compared to disposable products and can save money over time, though the upfront cost is higher.
Intimate Washes, Wipes, and Sprays
Beyond menstrual products, the “feminine hygiene” category includes cleansing products like washes, wipes, sprays, and douches marketed for vaginal freshness. These represent a growing market, but medical evidence consistently raises concerns about them. Research has linked regular use of vaginal cleansing products to higher susceptibility to bacterial vaginosis and even cervical cancer.
The vagina is self-cleaning and maintains its own pH balance. The CDC recommends washing only the outside of the vagina (the vulva) and bottom daily with water or mild, unscented soap. Internal cleansing products like douches disrupt the natural bacterial environment, and even external products with fragrances or added chemicals can cause irritation.
What’s Actually in These Products
A systematic review published in BJOG (a major obstetrics and gynecology journal) found measurable levels of several concerning chemicals in menstrual products. These included phthalates (plasticizers used in manufacturing), volatile organic compounds from adhesive backings, parabens, fragrance chemicals including synthetic musks, and dioxins left over from bleaching processes. Pads and panty liners showed the highest concentrations of certain phthalates.
This matters because vulvar and vaginal tissue is highly permeable. Chemicals absorbed through this tissue enter the bloodstream more directly than chemicals absorbed through thicker skin elsewhere on the body, bypassing the liver’s usual filtering process. Phthalates have been associated with reproductive health effects, dioxins are linked to hormonal disruption and immune issues, and several of the volatile organic compounds detected are classified as human carcinogens.
Dioxin levels in modern products fall below established safety thresholds for general exposure. However, no safety threshold exists specifically for menstrual products, and researchers have noted that vaginal exposure may deliver these chemicals to reproductive tissue at higher concentrations than other routes. Fragranced products tend to contain the most additional chemicals, so unscented options are generally the simpler choice.
Choosing What Works for You
There’s no single best product. The right choice depends on your flow, comfort level, activity, and preferences around sustainability and cost. Many people use a combination: tampons or a cup during the day, pads at night, liners as backup. Here’s a quick comparison of the main options:
- Pads: External, no insertion, available in all absorbencies. Easy to use but can feel bulky. Change every few hours.
- Tampons: Internal, discreet, good for swimming and sports. Must be changed every 4 to 8 hours. Carry a small TSS risk.
- Menstrual cups: Internal, reusable, can wear 6 to 12 hours. Steeper learning curve for insertion. Cost-effective long term.
- Menstrual discs: Internal, thin profile, wearable for 8 to 12 hours. Available in disposable or reusable versions.
- Period underwear: No insertion, nothing to attach. Works alone for lighter days or as backup on heavier ones. Requires laundering.
- Reusable cloth pads: External, eco-friendly, become more absorbent with use. Need rinsing and washing after each wear.
If you’re trying a new product for the first time, starting on a lighter flow day or using it alongside a backup product can help you gauge absorbency and comfort before relying on it fully.