How to Get Sunscreen and Sweat Out of Clothes

Summer in North Idaho is outdoor season — hiking the Schweitzer trails, paddleboarding on Lake Pend Oreille, or just working in the yard. And with all that comes two laundry nemeses: sunscreen and sweat.

Both are stubborn. Both get worse if you handle them wrong. Here’s exactly what to do.

Why Sunscreen Stains Are So Tricky

Sunscreen stains are oil-based, which means standard detergent alone often won’t cut it. The oily residue also reacts with heat — so throwing a sunscreen-stained shirt in a hot dryer essentially bakes the stain in permanently.

The orange or yellow staining you sometimes see on white shirts after sunscreen isn’t the sunscreen itself — it’s a chemical reaction between the avobenzone in the sunscreen and the minerals in your water. Mineral-rich water (common in North Idaho) makes this worse.

How to Remove Sunscreen Stains

1. Act fast. Fresh stains are always easier than set ones.
2. Scrape off excess. If there’s any sunscreen residue on the fabric, gently scrape it off — don’t rub it in.
3. Pre-treat with dish soap. Apply a small amount of grease-cutting dish soap (like Dawn) directly to the stain. Work it in gently with your fingers and let it sit for 5–10 minutes.
4. Rinse with cold water. Always cold — never hot at this stage.
5. Check before drying. If the stain is still visible after washing, do not put it in the dryer. Air dry and repeat the treatment.

For the orange/yellow mineral reaction stains, try soaking in a mixture of white vinegar and water (1:3 ratio) for 30 minutes before washing.

How to Remove Sweat Stains

Sweat stains are a combination of body oils, salts, and the proteins in sweat — which is why they turn yellow over time, especially in the underarm area of white shirts.

1. Pre-treat with white vinegar. Apply undiluted white vinegar to the stain and let it soak for 30 minutes.
2. Make a paste with baking soda. Mix baking soda with enough water to form a paste. Apply to the stain, work it in, and let sit for another 30 minutes.
3. Wash in warm water with your regular detergent.
4. Check before drying. Same rule — if it’s still there, don’t dry it.

Enzymatic detergents (like Persil or Tide with enzymes) work especially well on sweat stains because they break down the proteins. Worth keeping one on hand for summer.

What Not to Do

• Don’t use hot water on fresh stains — it sets them
• Don’t put stained items in the dryer until the stain is gone
• Don’t rub aggressively — it pushes the stain deeper into the fibers
• Don’t use bleach on sunscreen stains — it can make the yellowing worse

When to Just Bring It In

Some stains are stubborn enough that a commercial-grade washer makes a real difference. Our machines run hotter and longer than most home washers, and we carry heavy-duty detergents on-site. If you’ve tried the home treatment and it’s not coming out, bring it in.

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