Laundry help · white shirts
How to get sweat stains out of white shirts
Yellowed underarms on a white shirt usually come from a mix of perspiration and antiperspirant residue. Cleaning and textile experts treat them the same way: pretreat, give it time, wash in the hottest water the fabric allows, and do not put the shirt in the dryer until the stain is gone.
Shown: Maxim underarm roll-ons. Laundry steps on this page work regardless of which antiperspirant you use.
Maxim® Ulti-Dri™ 15%
15% aluminum chloride underarm roll-on, designed to be applied at bedtime so it can dry before clothes go on.
Shop Maxim 15%
Maxim Sensitive
Lower-strength option (10.8% aluminum chloride, per Maxim) with the same bedtime routine.
Shop Maxim SensitiveBefore you start: read the care label
Every source below gives the same warning first: check the garment’s care label, follow it, and pretest any cleaning product on an inconspicuous area before treating the stain (University of Georgia Extension). Use chlorine bleach only if the care label says it is safe for that fabric (American Cleaning Institute).
Safety: never mix ammonia and chlorine bleach
The International Hyperhidrosis Society warns that mixing ammonia, or anything containing ammonia, with chlorine bleach produces hazardous fumes. If you try ammonia on a stain, rinse it out completely before any wash that uses chlorine bleach. Work in a ventilated area.
Why underarm stains turn yellow
University of Georgia Extension notes that antiperspirants containing ingredients such as aluminum chloride are acidic and may change the color of some dyes. IHhS explains that ammonia, which is alkaline, can help neutralize acidic fresh antiperspirant and sweat, while older stains have already oxidized, which is why white vinegar is suggested for those instead. The American Cleaning Institute lists perspiration and deodorant stains as separate entries, but the steps overlap.
What each source recommends
Perspiration stains (ACI)
Use a prewash stain remover or rub with bar soap, then launder in the hottest water safe for the fabric. If the color of the fabric has changed, apply ammonia to fresh stains or white vinegar to old ones, then rinse. Stubborn stains may respond to a product containing enzymes or oxygen bleach.
Heavy deodorant or antiperspirant stains (ACI, K-State)
Pretreat with a prewash stain remover, let it stand 5 to 10 minutes, then launder using an oxygen bleach (K-State Research and Extension). Light stains: pretreat with liquid laundry detergent and launder.
Set-in perspiration (UGA Extension)
Soak in warm water with sodium perborate (an oxygen bleach) for 15 to 30 minutes, then launder with the hottest water and bleach safe for the garment.
Yellow underarms (IHhS)
Turn the shirt inside out, rinse with cold water, pretreat, and let it sit 30 minutes. Pretreat options include detergent, ammonia, white vinegar, a bleach stick, or hydrogen peroxide, or soak with an enzyme laundry product. Wash in the hottest water the fabric tolerates with a detergent containing color-safe bleach, and follow your detergent’s own temperature directions.
Lingering odor in clean shirts
UGA Extension notes that perspiration odor may cling to washable garments even after laundering. It suggests an overnight soak in warm water with 3 or 4 tablespoons of salt per quart, then a rinse. IHhS suggests rinsing with white vinegar before washing or adding an extra rinse cycle, and washing sweaty clothes as soon as possible.
Preventing new stains
- Apply antiperspirant at bedtime and let it dry. IHhS says a thin layer applied at night keeps product off your clothes, and the sweat-duct plugs it forms hold up to a morning shower.
- Use less. One swipe up and one swipe down is plenty, according to IHhS.
- Add a layer. Undershirts or dress shields keep perspiration and product from soaking into the outer fabric (IHhS). AAD also suggests underarm or dress shields for people who sweat heavily (AAD tips).
- Rinse early. IHhS recommends rinsing sweaty areas with cold water soon after taking the shirt off; the longer residue stays, the harder it is to remove.
If stains are a sign that you are sweating through shirts most days, see Maxim’s page on sweating through shirts and AAD’s guidance on when to see a dermatologist.
Step by step
Removing yellow underarm stains from a white shirt
- Check the care label and pretest your cleaner on an inconspicuous area.
- Turn the shirt inside out and rinse the underarms with cold water.
- Pretreat with a prewash stain remover, liquid detergent, or bar soap. For a color change, try ammonia on a fresh stain or white vinegar on an old one, then rinse well.
- Let it sit (5 to 30 minutes, depending on the method), or soak in an enzyme or oxygen-bleach product.
- Wash in the hottest water safe for the fabric. Use chlorine bleach only if the label allows it, and never with ammonia.
- Air-dry and check. Repeat before using the dryer; heat can set the stain.
Combined from ACI, K-State Research and Extension, University of Georgia Extension, and IHhS (see sources).
FAQ
Questions people ask
What gets yellow sweat stains out of white shirts?
Pretreat with a stain remover, detergent, or bar soap, then wash in the hottest water safe for the fabric. Stubborn stains may respond to an enzyme product or oxygen bleach (American Cleaning Institute).
Should I use vinegar or ammonia on a sweat stain?
For a color change, ACI suggests ammonia on fresh stains and white vinegar on old stains, followed by a rinse. Never combine ammonia with chlorine bleach.
Can I put a stained shirt in the dryer?
Not until the stain is gone. IHhS and ACI both warn that dryer heat can set the stain.
Can chlorine bleach remove pit stains?
Only use chlorine bleach if the care label says it is safe for the fabric. Oxygen bleach is the option ACI and K-State list for heavy deodorant stains.
How do I stop getting new sweat stains?
Apply a thin layer of antiperspirant at bedtime and let it dry, wear an undershirt or dress shields, and rinse sweaty areas soon after wearing (IHhS, AAD).
25 years of trust
Real people. Real results.
These are personal experiences with Maxim underarm antiperspirant. They are not laundry advice and do not show stain results. Individual results vary.
Blessings do happen
“You apply at night sparingly and the next day you DO NOT SWEAT… The confidence and peace of mind that Maxim has given me merits the 5 star review.”— J. Millward
Dermatologist endorsement (separate from customer reviews)
Dr. Jennifer Haley on Maxim
Dr. Jennifer Haley, a dermatologist, discusses Maxim antiperspirant in her own words. Her video is an expert endorsement, presented separately from customer experiences and from the sources cited on this page.
Dr. Jennifer Haley · 45-second cut. Full-length video.
Sources
- American Cleaning Institute: Stain removal guide (perspiration; deodorants)
- K-State Research and Extension: Stain removal
- University of Georgia Extension (Textiles): Remove stains from perspiration
- University of Georgia Extension (Textiles): Remove stains from antiperspirant, deodorant
- IHhS: Laundry solutions
- AAD: How to control excessive sweating — dermatologists’ tips
Educational information, not a diagnosis or medical advice. Sources were opened and read on Nov 6, 2026.
Prevention
Keep product off your shirts
Maxim’s directions are to apply at night before bed, so it can dry before clothes go on. Individual results vary.
Laundry guidance summarized from the sources listed. Always follow garment care labels and cleaning-product directions, and test on an inconspicuous area first. Individual results vary.
