Use a gentle exfoliant 2–3 times per week
Apply a fragrance-free moisturizer daily
Switch to a mild, alcohol-free deodorant
Avoid frequent shaving or use a sharp, clean razor
Shave in the direction of hair growth
Try waxing or trimming instead of shaving if irritation occurs
Wear loose, breathable clothing
Reduce friction from tight sleeves and repetitive rubbing
Use products with niacinamide
Use products with glycolic acid
Use products with lactic acid
Use products with azelaic acid
Use products with vitamin C
Apply aloe vera gel to soothe irritation
Keep the area clean and dry
Avoid harsh scrubs and bleaching products
Patch test new products before regular use
Maintain a healthy weight if friction is a factor
See a dermatologist if darkening is sudden, severe, or persistent