Remove Perspiration or Sweat Stains

Treat with prewash stain remover, or dampen stain and rub with bar soap. If the color of the fabric has changed slightly, apply ammonia to fresh stain or white vinegar to old stain, rinse. Launder in hottest water safe for that fabric. Stubborn stains may respond to pretreating (soak) with a enzyme product (like ERA), then launder using an all-fabric bleach.