How to Wash & Care for Period Underwear: The Complete Guide

One of the best things about period underwear? It's reusable. That means better for the planet, better for your budget, and better for your body. But here's the question we get asked most: "Isn't washing period underwear... gross?"

The honest answer: not at all. It's actually easier and less messy than dealing with disposable products. With the right care routine, your Cheeki will stay fresh, absorbent, and long-lasting cycle after cycle — for years to come.

Jump to 3-step routine Wash bag Cheat sheet By situation How many pairs Lifespan tips Troubleshooting FAQs

The simple 3-step care routine

Rinse in cold water
After wearing, hold under cold running water and gently squeeze the absorbent gusset until the water runs clear — usually 30–60 seconds.
- +Cold water prevents blood stains from setting
- +Protects the absorbent layers from damage
- +Makes machine washing much more effective
- −Never use hot water — it "cooks" protein stains in
Machine wash on gentle cycle
After rinsing, toss them in the washing machine with your regular laundry. Yes — you can wash them with your other clothes.
- +Cold water — protects fabrics and absorbency
- +Gentle or delicate cycle — preserves the leak-proof layers
- +Mild, fragrance-free detergent
- −No bleach — damages fabric and reduces absorbency
- −No fabric softener — coats fibers and blocks absorbency
- −No hot water — breaks down the leak-proof barrier over time
Air dry
Hang on a drying rack, clothesline, or shower rod — or lay flat on a clean towel. Usually 4–12 hours depending on humidity.
- +Preserves the waterproof barrier
- +Extends lifespan significantly
- +Gentler on elastic and absorbent layers
- −Avoid the dryer — high heat wears down the barrier over time

In a pinch

If you must use a dryer, choose the lowest heat setting possible. Occasional low-heat drying won't ruin your underwear, but repeated high-heat drying will shorten their lifespan.

Make washing even easier: the Cheeki Wash Bag

The Cheeki Wash Bag is a total game-changer — especially for teens, first-time users, or anyone who wants laundry to be as simple as possible.

Protects your underwear from snags and damage in the machine
Prevents tangling with other clothes
Extends the lifespan of your underwear by reducing wear and tear
Great for teens — simple, discreet, and easy to manage independently
Doubles as a travel pouch — perfect for sleepovers or trips

How to use it: rinse as usual → place underwear in the bag → zip closed → toss the whole bag in the wash → air dry after. That's it.

Quick care cheat sheet

Save this to your phone or stick it inside your laundry cupboard.

Do ✓

✓Rinse in cold water until clear
✓Machine wash on gentle cycle
✓Use cold water for washing
✓Use mild, gentle detergent
✓Air dry — hang or lay flat
✓Use a wash bag for protection
✓Rotate multiple pairs

Don't ✗

✗Use hot water for rinsing or washing
✗Use bleach or harsh chemicals
✗Use fabric softener
✗Put in the dryer on high heat
✗Leave unwashed for more than 24 hours
✗Wring or twist aggressively
✗Stress about slight discoloration

Washing tips for every situation

Teens and first-time users

→Use a wash bag — keeps things simple and discreet
→Set a routine — rinse after school, wash with regular laundry
→Don't stress if you forget to rinse immediately — just do it within 24 hours

Travel

→Bring a small wet bag or carry pouch for used pairs
→Rinse in the hotel sink or shower
→Pack enough pairs so you don't need to wash mid-trip
→Air dry overnight in the bathroom

Busy parents

→Batch rinse — have your daughter rinse right after use, then wash together
→Teens can absolutely manage rinsing and washing independently
→Keep 5+ pairs so there's no pressure to wash urgently

Can't rinse right away?

→Place in a small wet bag or waterproof pouch
→Rinse when you get home — even a few hours later is fine
→Don't leave for more than 24 hours for best results

How many pairs do you need?

We recommend 3–5 pairs to comfortably rotate through your cycle without stress about laundry timing.

Light to moderate flow

2–3 medium flow pairs for daytime
1–2 heavy flow pairs for overnight

Heavy flow

1–2 medium flow for lighter days
3–4 heavy flow for maximum coverage

Teens and first periods

Start with 3 pairs total
1–2 medium + 1–2 heavy
Add more as you learn your flow

Easy option

Our Starter Kits are designed to give you the right rotation from day one — no guesswork required.

How long does period underwear last?

With proper care, Cheeki underwear lasts 2–3 years or longer. That's years of no buying pads or tampons, no store runs mid-cycle, and no throwing away hundreds of disposable products.

Tips to maximise lifespan

Rinse before washing — prevents buildup and staining
Always air dry — preserves the leak-proof barrier
Use a wash bag — protects from snags and machine damage
Avoid fabric softener — maintains absorbency over time
Rotate pairs — reduces wear on any single pair
Store in a dry, cool place between uses

Normal vs not normal

Slight discoloration or fading over time is completely normal and doesn't mean you need to replace them. Signs it's actually time to replace: significantly decreased absorbency, visible holes or damaged elastic, or a leak-proof barrier that no longer works.

Troubleshooting common issues

My underwear smells even after washing

Likely causes: not rinsing thoroughly enough, too much detergent causing buildup, hard water, or fabric softener residue.

→Rinse more thoroughly before washing
→Use less detergent
→Add a cup of white vinegar to the rinse cycle
→Strip wash: soak in warm water with a little detergent and baking soda for 30 mins, then wash normally

Absorbency has decreased

Likely causes: fabric softener buildup, detergent residue, or high heat damage.

→Stop using fabric softener immediately
→Do a strip wash to remove buildup
→Switch to a gentler detergent
→Always air dry going forward

Stains won't come out

→Slight discoloration is normal and doesn't affect performance — don't stress about perfect white fabric
→Use a gentle stain stick before washing
→Soak in cold water with a little hydrogen peroxide (not bleach)

Fabric feels stiff or rough

→Usually caused by too much detergent or hard water buildup
→Use less detergent next wash
→Add white vinegar to the rinse cycle to break down buildup

Frequently asked questions

Do I have to rinse them right away, or can I wait?

You can wait — but the sooner you rinse, the easier it is and the better your underwear will look long-term. If you can't rinse immediately, store them in a wet bag or waterproof pouch and rinse within 24 hours.

Can I soak them overnight instead of rinsing?

You can, but you don't need to. A 30–60 second cold rinse is just as effective and much easier. If you prefer to soak, use cold water and limit it to a few hours — soaking overnight is overkill.

What detergent should I use?

Any gentle, fragrance-free detergent works well — Seventh Generation Free & Clear, Tide Free & Gentle, or All Free Clear are popular choices. Avoid anything with fabric softener built in or strong fragrances and dyes.

Can I hand wash them instead?

Absolutely — hand washing is totally fine and even gentler. Rinse as usual, fill a sink with cold water and a small amount of gentle detergent, gently agitate, rinse thoroughly, squeeze (don't wring) out excess water, and air dry.

Can I use stain remover?

Yes — stick to gentle options and test on a small area first. Avoid bleach-based removers. Remember that slight discoloration over time is completely normal and doesn't affect how well your underwear performs.

How do I know if I'm washing them correctly?

Your underwear should smell fresh after washing, feel soft and absorbent, and still have a slight waterproof feel in the gusset. If you notice strong odors, reduced absorbency, or rough texture, check the troubleshooting section above.