Use a gentle cleanser and avoid harsh scrubbing
Exfoliate lightly 1 to 2 times per week
Apply a fragrance-free moisturizer after washing
Stop using irritating deodorants or antiperspirants
Switch to shaving carefully or consider waxing/laser hair removal
Wear loose, breathable clothing
Maintain a healthy weight if excess friction is a factor
Use products with niacinamide, azelaic acid, or glycolic acid
Try a dermatologist-recommended retinoid if appropriate
Treat any rash, itching, or infection promptly
See a dermatologist if the darkening is sudden, severe, or persistent
Get checked for insulin resistance, diabetes, or hormonal issues if needed