Hello
Dark underarms are commonly caused by friction, frequent shaving, buildup of dead skin, sweating, irritation from deodorants, obesity, hormonal changes, or a condition called acanthosis nigricans which can be associated with insulin resistance. Roughness after shaving is very common because shaving can irritate and thicken the skin over time.
Try to avoid harsh shaving and consider trimming or waxing if your skin tolerates it. Use gentle soap, keep the area dry, and avoid deodorants with strong fragrance or alcohol if they irritate your skin.
👍Creams that may help safely include mild lactic acid or glycolic acid lotions, niacinamide, azelaic acid, kojic acid, or low-strength retinol at night.
🛑 Moisturizing regularly is important. Do not use strong steroid creams or bleaching creams without medical supervision because they can damage the skin.
If the darkness is very thick, velvety, spreading to the neck/groin, or associated with weight gain or irregular periods, you should get checked for diabetes or insulin resistance. A dermatologist can also offer safer treatments such as chemical peels or laser therapy if needed.
Take care Feel free to ask
