Sweat happens.

Removing the stains can be a laundry challenge, but Family Handymanoffers a few tips: First, soak the garment in equal parts cold water and white distilled vinegar before laundering as usual.  Stubborn yellowish antiperspirant stains on white fabric can often be removed by scrubbing in 1 part Dawn dish soap mixed with 2 parts hydrogen peroxide. Let it soak in for an hour, then launder. Absolutely avoid chlorine bleach, and never try home remedies on silk and dry-clean-only garments. The safest solution? Bring the garment to us for professional care.