How to Remove Stains from Period Underwear and Pads

Quick answer

Rinse period underwear and reusable pads in cold water as soon as possible, then treat any remaining marks with an oxygen-based stain remover before washing. Cold water keeps blood proteins from setting, while oxygen bleach breaks down the stain without damaging absorbent layers. Avoid hot water and chlorine bleach, which can set stains and harm the fabric.

Period stains are a normal part of using reusable period products, but they don't have to be permanent. The key is acting quickly with cold water and the right stain remover, then washing gently to preserve absorbency.

This guide walks you through a step-by-step process for removing period stains from period underwear and reusable pads, including common mistakes to avoid and how to check your work before drying.

Why cold water is your first step

Blood contains proteins and iron that can bind to fabric fibers, especially in hot water. Cold water keeps those proteins soluble so they rinse away instead of setting. Always start with the coldest water you can tolerate, and avoid wringing or scrubbing aggressively, which can push the stain deeper into the absorbent layers.

If you can't rinse immediately, don't panic. A quick cold soak when you get home is still effective. Just avoid letting the item dry completely before treating it, as dried blood is harder to remove.

• Use cold water only for the first rinse and soak.
• Never use hot water or a hot dryer before the stain is gone.

Choosing a stain remover that's safe for period products

Oxygen-based stain removers (often labeled oxygen bleach or percarbonate) are the safest choice for period underwear and reusable pads. They break down organic stains without the harshness of chlorine bleach, which can damage fibers and reduce absorbency over time. Look for a fragrance-free, dye-free formula if you have sensitive skin.

For stubborn or set-in stains, you can also try a paste of oxygen powder and cold water applied directly to the stain. Let it sit for 15–30 minutes before washing. Always check the care label on your product for any specific restrictions.

• Avoid chlorine bleach and fabric softeners, which can coat fibers and reduce absorbency.
• Test any new stain remover on a small hidden area first.

Step-by-step stain removal process

Start by rinsing the item in cold water to remove excess blood. If the stain persists, soak it in a solution of cold water and oxygen-based stain remover for 30 minutes to a few hours. Then gently squeeze the solution through the fabric and wash as usual with like colors. For reusable pads, you can use the same process, but pay extra attention to the edges and snap closures.

After washing, check the item before drying. If any stain remains, repeat the treatment. Drying with heat will set the stain, so always air-dry until you're satisfied.

• Never put stained period products in a hot dryer.
• For reusable pads, fasten snaps before washing to prevent snagging.

Your stain removal checklist

1. Rinse in cold water immediately: Hold the item under cold running water, gently squeezing to flush out blood. Avoid hot water, which sets stains. If you can't rinse right away, soak in cold water as soon as possible.
2. Apply oxygen-based stain remover: Dissolve oxygen bleach in cold water and soak the item for 30 minutes to a few hours. For targeted stains, make a paste and apply directly. Never use chlorine bleach or fabric softener.
3. Wash gently with like colors: Wash on a gentle cycle or by hand with a mild detergent. Fasten snaps on reusable pads to prevent snagging. Avoid washing with rough items like jeans or towels.
4. Check before drying: Inspect the item in good light. If any stain remains, repeat the treatment before drying. Heat sets stains, so always air-dry until you're stain-free.
5. Air-dry completely: Hang or lay flat to dry. Ensure the item is fully dry before storing to prevent mildew. Avoid direct sunlight for prolonged periods, which can fade colors.

Products that pair well with this routine

• Reusable Panty Liner - Black: 3-layer protection catches your flow, with odour control and 100% cotton on the upper and outer layers. The cotton layers are gentle and easy to rinse, making stain removal straightforward. The black color also helps hide minor stains between washes.
• Side Seamfree Bamboo Period Full Brief - Black: Made from soft, breathable viscose from bamboo, with seamless knitting technology and elastic binding at leg openings. Bamboo viscose is delicate, so cold-water washing and oxygen-based stain removers are especially important to avoid damaging the fabric.

With a cold-water rinse, oxygen-based stain remover, and a gentle wash, you can keep your period underwear and reusable pads looking fresh and performing well for years. Always check the care label and treat stains promptly for the best results.