Tips 7 min read

Washing and Caring for Your Period Underwear: Expert Tips

Washing and Caring for Your Period Underwear: Expert Tips

Period underwear is a reusable and sustainable alternative to disposable period products. To ensure your period undies last and remain hygienic, proper washing and care are essential. This guide provides expert tips on how to wash and care for your period underwear effectively.

1. Rinsing and Pre-Soaking Techniques

Rinsing and pre-soaking are crucial first steps in preventing stains and maintaining the cleanliness of your period underwear. These techniques help remove excess blood before machine washing.

Why Rinse Immediately?

Prevents Staining: Fresh blood is easier to remove than dried blood. Rinsing immediately after use prevents the blood from setting into the fabric.
Reduces Odour: Rinsing helps eliminate bacteria that can cause unpleasant odours.
Prepares for Washing: Removing bulk blood makes the machine washing process more effective.

How to Rinse:


  • Remove: Take off your period underwear as soon as you can after use.

  • Rinse: Hold the underwear under cold running water. Gently massage the gusset area to help dislodge any remaining blood.

  • Continue Rinsing: Keep rinsing until the water runs clear. This may take a few minutes, depending on the flow.

Pre-Soaking for Stubborn Stains:

If you can't wash your period underwear immediately, pre-soaking is a great option. This helps loosen dried blood and makes stain removal easier.

  • Fill a Basin: Fill a basin or sink with cold water.

  • Add Detergent (Optional): You can add a small amount of mild detergent or stain remover to the water. Enzyme-based detergents are particularly effective at breaking down blood stains.

  • Submerge: Place the rinsed period underwear in the water, ensuring the entire gusset area is submerged.

  • Soak: Let the underwear soak for at least 30 minutes, or up to overnight for heavier staining.

  • Rinse Again: After soaking, rinse the underwear again under cold water before machine washing.

2. Machine Washing: Temperature and Detergent

Machine washing is an effective way to thoroughly clean your period underwear. However, it's important to use the correct temperature and detergent to avoid damaging the fabric and compromising its absorbency.

Water Temperature:

Cold Water is Best: Always wash your period underwear in cold water (below 30°C). Hot water can cause blood to set into the fabric, making stains more difficult to remove.
Avoid Hot Water: Using hot water can also damage the absorbent layers of your period underwear, reducing their effectiveness over time.

Detergent Choice:

Mild Detergent: Use a mild, fragrance-free detergent. Harsh chemicals and fragrances can irritate sensitive skin and damage the fabric.
Avoid Fabric Softeners: Fabric softeners can coat the absorbent layers of your period underwear, reducing their ability to absorb moisture. They can also leave a residue that can trap bacteria and cause odours.
Enzyme-Based Detergents: Consider using an enzyme-based detergent, as these are particularly effective at breaking down blood stains. Learn more about Periodundies and our commitment to sustainable practices.

Washing Cycle:

Gentle Cycle: Use a gentle or delicate cycle to protect the fabric and elastics of your period underwear.
Avoid Bleach: Never use bleach, as it can damage the absorbent layers and elastic, shortening the lifespan of your underwear.
Wash with Similar Items: Wash your period underwear with other delicate items, such as lingerie or activewear. Avoid washing them with heavy items like towels or jeans, which can cause friction and wear.

3. Drying Methods: Air Drying vs. Tumble Drying

The way you dry your period underwear can significantly impact its lifespan and performance. Choosing the right drying method is essential for maintaining its integrity.

Air Drying:

The Best Option: Air drying is the preferred method for drying period underwear. It's gentle on the fabric and helps maintain its shape and absorbency.
How to Air Dry:

  • Gently Squeeze: After washing, gently squeeze out excess water. Avoid wringing, as this can damage the fabric and elastics.

  • Hang to Dry: Hang your period underwear on a clothesline or drying rack in a well-ventilated area. Avoid direct sunlight, as it can fade the colour and damage the fabric.

  • Turn Inside Out: Turn the underwear inside out to allow the gusset area to dry thoroughly. This helps prevent the growth of bacteria and odours.

Tumble Drying:

Not Recommended: Tumble drying is generally not recommended for period underwear. The high heat can damage the absorbent layers and elastics, reducing their effectiveness and lifespan.
If You Must Tumble Dry: If you must tumble dry, use the lowest heat setting and a delicate cycle. However, be aware that this can still shorten the lifespan of your underwear.

Common Mistakes to Avoid:

Drying in Direct Sunlight: Direct sunlight can fade the colour and damage the fabric of your period underwear.
Using High Heat: High heat can damage the absorbent layers and elastics, reducing their effectiveness and lifespan.
Leaving Damp for Too Long: Leaving your period underwear damp for too long can lead to the growth of bacteria and odours. Ensure they are completely dry before storing them.

4. Stain Removal Tips and Tricks

Even with proper rinsing and washing, stains can sometimes occur. Here are some effective stain removal tips and tricks to keep your period underwear looking its best.

Natural Stain Removers:

Hydrogen Peroxide: A mild solution of hydrogen peroxide (3%) can be effective at removing blood stains. Apply a small amount directly to the stain, let it sit for a few minutes, and then rinse with cold water.
Baking Soda Paste: Make a paste of baking soda and water and apply it to the stain. Let it dry completely, then brush off the dried paste and rinse with cold water.
Lemon Juice: Lemon juice is a natural bleaching agent that can help lighten stains. Apply lemon juice to the stain, let it sit in the sun for a few hours, and then rinse with cold water. (Note: be cautious using this on dark colours as it may lighten the fabric).

Commercial Stain Removers:

Enzyme-Based Stain Removers: As mentioned earlier, enzyme-based stain removers are particularly effective at breaking down blood stains. Follow the instructions on the product label.
Avoid Harsh Chemicals: Avoid using stain removers that contain harsh chemicals, such as bleach or chlorine, as these can damage the fabric and elastics.

Dealing with Set-In Stains:

Repeat the Process: For set-in stains, repeat the stain removal process multiple times. You may need to soak the underwear overnight in a solution of cold water and stain remover.
Professional Cleaning: If the stain is particularly stubborn, consider taking your period underwear to a professional cleaner who specialises in delicate fabrics. Our services include advice on fabric care.

5. Extending the Lifespan of Your Underwear

Proper care and maintenance can significantly extend the lifespan of your period underwear. By following these tips, you can ensure they remain effective and hygienic for years to come.

Storage Tips:

Store Clean and Dry: Always store your period underwear clean and dry. Damp underwear can attract bacteria and mould.
Fold or Roll: Fold or roll your period underwear to save space and prevent wrinkles.
Store in a Breathable Bag: Consider storing your period underwear in a breathable cotton bag or drawer organiser to protect them from dust and moths.

Regular Inspection:

Check for Wear and Tear: Regularly inspect your period underwear for signs of wear and tear, such as thinning fabric, loose elastics, or damaged seams.
Replace as Needed: Replace your period underwear when they start to lose their absorbency or show significant signs of wear and tear. Frequently asked questions can help you determine when it's time for a replacement.

Avoid Over-Washing:

Wash Only When Necessary: While it's important to keep your period underwear clean, avoid over-washing them. Over-washing can damage the fabric and elastics, shortening their lifespan.
Rinse After Each Use: As mentioned earlier, rinse your period underwear after each use to prevent stains and odours. This will reduce the need for frequent machine washing.

By following these expert tips, you can ensure your period underwear remains clean, hygienic, and effective for years to come. Proper washing and care are essential for maximising their lifespan and enjoying the benefits of this sustainable period product. Remember to always refer to the care instructions provided by the manufacturer for specific guidance on your particular brand of period underwear. And remember, choosing the right period underwear can make all the difference!

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