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For healthy armpits you'll want to show off come tank top weather, click though for tips from New York dermatologist Dr. Ellen Marmur.
The best way to treat irritation is to prevent it. Three times a week, follow what Dove and Dr. Marmur call a "three-step PitiCure:" Use a gentle exfoliating scrub or wipes to cleanse underarms and draw out impurities. Rinse with warm water and pat dry with a towel.
Choose a deodorant with moisturizing benefits. "When you shave, 36 percent of what you take off is actually your skin," says Dr. Marmur. "If you strip away the top part of the skin, you evaporate your natural oils which can cause a rash."
If you have sensitive skin, Dr. Marmur recommends using an unscented deodorant and staying away from products that contain alcohol.
Aluminum is a necessary and unharmful ingredient in antiperspirants. "No studies show that aluminum causes any problems," says Dr. Marmur. "As a physician, I often prescribe aluminum antiperspirants for people who suffer from hyperhidrosis that are many times more potent than products you find in the drugstore."
Furthermore, deodorant gets into sweat ducts, but not into the blood stream. "Your body has a protective layer so you don't have to panic about every single thing you're putting on your body as opposed to what you're eating and smelling," says Dr. Marmur.

When applying deodorant (three swipes is sufficient), be sure to go beyond the deep part of the underarm. Sweat glands extend two inches around the area.

If you find that three swipes of deodorant isn't enough to get you through the day, see your dermatologist about clinical strength options.