Sunscreen & Swimwear: Care Guide & FAQs


Sunscreen is essential for protecting your skin from the harsh Aussie sun. But while it saves your skin, it can leave behind greasy, rust-like stains on your favourite swimwear. The good news? With the right care, you can prevent and remove sunscreen stains so your swimsuits stay fresh, vibrant, and ready for every beach day.

How to Prevent Sunscreen Stains on Swimwear

Being mindful during application is the easiest way to protect your swimmers from damage:

  • Apply before you dress – Always put sunscreen on before wearing your swimsuit to avoid transfer. Let it dry fully before slipping on your bathers.

  • Choose avobenzone-free formulas – The ingredient avobenzone is what causes the dreaded rust-like stains when it reacts with water. Opt for avobenzone-free sunscreens like Le Tan or Beachfox for swim-safe protection.

  • Rinse after wear – Salt, chlorine, and sunscreen residues can cling to fabric. Rinse your swimsuit in cool, fresh water immediately after swimming.

How to Remove Sunscreen Stains From Swimwear

If you notice stains after a swim, don’t stress! Try these proven home and product-based remedies:

🍋 Lemon Juice & Salt

  • Saturate the stained area with cool water.

  • Apply lemon juice directly onto the stain.

  • Cover with salt and leave overnight.

  • Brush off in the morning, then rinse.

🧼 Bi-Carb Soda or Corn Starch

  • Blot excess sunscreen.

  • Sprinkle bi-carb soda or corn starch on the stain.

  • Let sit for 30 minutes, brush off, then rub gently with a colour-free dishwashing liquid.

🧴 Stain Remover or Rust Remover

  • Use a store-bought stain remover designed for oily marks, following the instructions.

  • For rust-coloured marks, a rust remover may also work (check label directions carefully).

🍶 Vinegar Solution

  • Mix equal parts white vinegar and water.

  • Apply to stain for 5–10 minutes, then rinse thoroughly.

FAQs About Sunscreen & Swimwear

Why does sunscreen stain swimwear?
Sunscreen often contains oils and avobenzone, which oxidises in water and leaves rusty marks. Combined with chlorine, salt, and heat, these stains set quickly.

What colours are most affected?
Light fabrics (especially whites and pastels) show sunscreen stains more visibly. Darker swimsuits may not stain as noticeably, but oils can still damage elasticity.

What’s the best way to care for swimwear after sunscreen use?

  • Rinse immediately in cool, fresh water.

  • Hand wash with mild detergent only when necessary.

  • Dry flat in the shade, never in direct sunlight.