Underwear is the closest layer to the body, yet many women unknowingly wash it the wrong way. These habits may look harmless, but they actually create the perfect environment for bacteria, fungi, and lingering odors to thrive — increasing the risk of infections and skin irritation.

Here are four common mistakes that most women have made at least once.

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1. Washing underwear together with everyday clothing

Mixing underwear with jeans, towels, socks, or workout gear allows bacteria to transfer from one fabric to another. Heavy fabrics can also trap dirt that clings to your intimate wear.

Why it’s risky:
Underwear collects sweat, discharge, and skin cells. When combined with other items, the load becomes harder to sanitize, and harmful microorganisms can easily spread.

Better habit:
Wash underwear separately in a small batch — especially if you’re prone to irritation or infections.

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2. Handwashing quickly without proper detergent

Many women rinse underwear with plain water, skip detergent entirely, or scrub lightly for a few seconds.

Why it’s risky:
Rinsing alone cannot remove sweat, oil, and harmful microbes. Detergent is necessary to break down bacteria and prevent fungus growth, particularly in humid climates.

Better habit:
Use mild detergent or antibacterial soap, soak for a few minutes, and rinse thoroughly.

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3. Drying underwear indoors, in dark bathrooms, or on cluttered racks

Underwear that isn’t fully dry becomes a breeding ground for mold and yeast. Bathrooms are often damp and poorly ventilated, making drying even slower.

Why it’s risky:
Moisture encourages Candida and other fungal pathogens that cause itching, odor, or yeast infections.

Better habit:
Dry underwear in a sunny, well-ventilated area. If indoors, place it near a window or use a drying machine.

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4. Reusing underwear or wearing them for too many hours

Some women wear the same pair for an entire day of activity, workouts, or even sleep in them. Others may reuse underwear “just once more” if it looks clean.

Why it’s risky:
The longer a pair stays on the body, the more heat and moisture accumulate. This creates an ideal environment for bacteria and fungus to rapidly multiply.

Better habit:
Change underwear at least once a day — and immediately after sweating or exercising.

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The Bottom Line

These small habits may seem harmless, but over time they can lead to irritation, discomfort, or even infections. By washing underwear properly and drying it in a hygienic environment, you can protect both your health and your home from unnecessary bacteria.