Causes: The cause is pore-clogging sweat combined with friction from rubbing clothes. If you're wearing make-up or sunscreen, that can exacerbate the problem.
Prevention: To prevent exercise-induced acne, you should change out of sweaty exercise clothes after running, and shower as soon as possible. Make sure you cleanse acne-prone areas thoroughly. You can use a soap that's designed for acne. Try to avoid wearing make-up during exercise. Opt for an oil-free sunscreen that's formulated for the face and neck. Choose a sunscreen gel (instead of a cream-based lotion) for the rest of your body.
