Reduce friction by wearing loose, breathable clothing and anti-chafing shorts
Keep the area clean and dry
Use a gentle exfoliant 2 to 3 times per week
Apply a moisturizer daily
Use products with niacinamide, azelaic acid, vitamin C, or lactic acid
Avoid harsh scrubbing and irritating soaps
Maintain a healthy weight if excess friction is a factor
Treat any rash, itching, or fungal infection promptly
Use sunscreen on exposed inner thighs
Stop hair removal methods that cause irritation
Patch test new skincare products before regular use
See a dermatologist if the darkening is sudden, severe, or persistent