You might not be able to get deodorant stains out of every type of clothing item. For example, any garment with the "dry clean only" care label is best left to the professionals [source: Munson]. Here are some tips for removing deodorant stains from washable garments.
Vinegar
For this stain-= removal method, start by dipping a sponge into some white vinegar. Apply the vinegar liberally to the stain.
Let the shirt stand for a few minutes and then wash it in the washing machine on the hottest temperature recommended by the manufacturer. Repeat the process on stubborn stains [source: Heloise].
Ammonia
Soak the garment for 15 minutes in a mixture of 1 quart (946 mL) of lukewarm water, ½ teaspoon (3 mL) liquid hand-dishwashing detergent and 1 tablespoon (15 mL) of ammonia. Be sure to use cool to lukewarm water.
Rub gently from the back of the garment to loosen the stain. Soak the stain in the above mixture for another 15 minutes before rinsing thoroughly and laundering [source: Porter].
Alcohol-based Cleansers
You can remove stains with rubbing alcohol, which works well at removing spray-deodorant stains. Rub the alcohol directly on the stain and then wash it off thoroughly [source: Good Housekeeping].
Lemon Juice
Combine lemon juice, which has a natural bleaching effect, with equal parts water. Rub the mixture on the stain. Then place your clothing item in the sun for an hour. Rinse and then wash as normal.
Hydrogen Peroxide
For white clothes, use hydrogen peroxide. Mix the product with equal parts water.
Nylon Stockings
For dark clothing, rubbing nylon stockings on fresh stains can prove effective.