What should I do about dark skin under the armpits?

Keep the underarm area clean by bathing regularly and using gentle body wash products to remove dirt and sweat, helping prevent skin darkening. Wear loose, breathable clothing to minimize friction between clothes and underarm skin, reducing pigment deposition. Increase intake of foods rich in vitamin C and antioxidants, such as fresh fruits and vegetables, which can help reduce melanin production. Use a moisturizing lotion or cream suitable for sensitive skin, especially after bathing, to lock in moisture and maintain skin hydration. Under medical guidance, consider using skin-lightening products containing ingredients such as vitamin C or arbutin.