Dark spots under the arms occur for a variety of reasons, but always result in embarrassment when wearing sleeveless shirts or swimsuits. Dark spots can make it seem as if you have unsightly hair under your arms, even just after you've shaved. Get rid of dark spots under the arms by identifying the reason for the dark spots and treating them according to the cause. A lifestyle change as simple as a different brand of antiperspirant could be the secret to smooth and spot-free underarms.
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Wax or pluck under your arm, rather than shaving to get rid of unwanted hair. Shaving can give you smooth underarms, but it can also leave behind stubble that can give the appearance of dark spots even when you have none. Waxing or plucking removes the hair at the root, so you don't see any hair stubble where the hair was simply shaved at the surface, notes The Beauty Brains website.
Switch the brand of antiperspirant or deodorant that you use. The fragrance or ingredients in a certain type of antiperspirant or deodorant can cause a darkening of the skin for those who are sensitive to it. Try a product especially made for sensitive skin to see if it causes the dark spots to fade.
Exfoliate under your arms at least twice a week, says the Yoga Wiz website. Dead skin cells can clog pores and make them look enlarged and dark. You can use an exfoliating cream from the store, or make your own with enough brown sugar and olive oil combined to make a paste. Rub the mixture under your arms in small circular motions, then rinse away to reveal smoother, brighter underarms.
Use lemon to fade stubborn spots. Lemon is often used to lighten skin when you suffer from hyperpigmentation, and it's easy to try. Just cut a lemon in half and rub the juice and pulp on the darkened area. Leave the liquid on for at least 10 minutes before rinsing away. Remember not to use this remedy on open cuts or sores, or soon after shaving, as lemons are very acidic and can cause stinging.
Always wash your new clothes before you wear them. Dark clothing can shed or cause dark discoloration under the arms. To make sure your clothes stay colorfast, wash as usual, adding a cup of vinegar to the laundry soap.