How to Remove Sweat Stains from Clothes

Sweat Stains: What's Actually Causing Them

Sweat itself is mostly water and is colorless — the yellow staining comes from a reaction between sweat proteins and the aluminum compounds in antiperspirant deodorant. This combination bonds to fabric fibers over time, creating stubborn yellow stains that regular washing can't remove. The solution: enzyme cleaners that break down the protein-based stain, plus an acid (like white vinegar) to dissolve the aluminum residue.

What You'll Need

• Shout Active Enzyme Laundry Stain Remover Spray
• Heinz White Vinegar
• OxiClean White Revive Power Paks (for white fabrics)
• Baking soda
• Dawn Ultra Dish Soap
• Microfiber cloths
• Soft brush or old toothbrush

Step-by-Step: Fresh Sweat Stains on Clothes

1. Rinse with cold water immediately after wearing. Don't let sweat dry into the fabric — the sooner you treat it, the easier it comes out.
2. Apply Shout Enzyme Spray. Spray Shout Active Enzyme Stain Remover directly onto the underarm and collar areas. The triple-enzyme formula breaks down sweat proteins. Let sit 5–10 minutes.
3. Machine wash cold with your regular detergent. For white fabrics, add an OxiClean White Revive Power Pak. Check before drying.

Step-by-Step: Yellow Sweat Stains (Set-In)

1. Apply white vinegar first. Pour Heinz White Vinegar directly onto the yellow stain. The acidity dissolves the aluminum compounds from antiperspirant that cause yellowing. Let sit 30 minutes.
2. Make a paste with baking soda. Mix baking soda with a little water to form a thick paste. Apply over the vinegar-soaked stain and work in gently with a soft toothbrush. The combination of acid (vinegar) and base (baking soda) creates a fizzing reaction that lifts the stain.
3. Apply Shout Enzyme Spray on top. Let sit 15–20 minutes.
4. Machine wash cold. For white fabrics, add OxiClean White Revive. Check before drying — heat sets sweat stains permanently.

Prevention Tips

• Wash clothes promptly after wearing — don't let sweat sit in fabric
• Switch to an aluminum-free deodorant to prevent yellow staining
• Apply deodorant at night and let it dry completely before dressing
• Pre-treat underarm areas with Shout Enzyme Spray before every wash as a preventive measure

Frequently Asked Questions

Why do sweat stains turn yellow?

The yellow color comes from a chemical reaction between sweat proteins and the aluminum compounds in antiperspirant deodorant. This is why aluminum-free deodorants don't cause yellow staining — there's no aluminum to react with the sweat.

Does white vinegar remove sweat stains?

Yes — white vinegar is very effective at dissolving the aluminum residue that causes yellow sweat stains. Use it as a pre-soak before applying enzyme cleaner for best results.

Can I remove old sweat stains that have been washed and dried multiple times?

Yes, though it takes more effort. Soak in white vinegar for 1 hour, apply baking soda paste, then treat with Shout Enzyme Spray. For white fabrics, follow with an extended OxiClean White Revive soak. Multiple treatments may be needed.