Use a gentle exfoliant 1 to 2 times per week
Moisturize the underarm area daily
Avoid harsh scrubbing
Switch to a fragrance-free deodorant
Stop using deodorants that irritate your skin
Shave carefully with a clean, sharp razor
Consider waxing or trimming instead of frequent shaving
Wear loose, breathable clothing
Keep the area clean and dry
Use topical products with niacinamide, azelaic acid, or glycolic acid
Try aloe vera gel or vitamin E oil
Apply sunscreen if the area is exposed to the sun
Maintain a healthy weight
Manage friction from tight clothing
Avoid home remedies that burn or irritate the skin
See a dermatologist if the darkening is sudden, severe, or persistent
Get checked for underlying causes such as insulin resistance or hormonal issues