Wash the area gently once or twice daily with a mild, fragrance-free cleanser
Shower after sweating or exercise
Use a salicylic acid body wash or benzoyl peroxide wash
Apply a non-comedogenic moisturizer after bathing
Exfoliate gently 1 to 2 times per week
Avoid harsh scrubs, picking, or squeezing the bumps
Wear loose, breathable clothing
Change sweaty clothes promptly
Use non-comedogenic sunscreen on exposed skin
Try products with lactic acid, glycolic acid, or urea if the bumps are rough
Keep hair products, lotions, and oils off the arms
Wash bedding and workout clothes regularly
See a dermatologist if it is painful, spreading, itchy, or not improving after several weeks