It's very important to shower after each workout. If you are sweating hard during your workout and don't shower after, the sweat molecules will clog your skin pores and form acne.
Most gyms have showers you can use after your workout. If you don't have time for a full shower, just body wash your body. You can shampoo your hair later at night.
Here are some tips for removing acne:
1. Sun tanning is a very effective means of reducing acne and drying out the skin.
2. Use anti-acne lotions at least once per day. Go to your doctor and ask him to prescribe you a topical acne cream. It'll work better then anything available over the counter and your insurance will cover it.
3. Make sure you are showering 3 times per day: upon waking, after workouts and before bed.
[FONT=wf_segoe-ui_normal]4. Zinc containing creams are very effective and available over the counter. Apply them to your trouble areas. [/FONT]
5. Black ointment is extremely effective. It stinks pretty badly, but I am pretty sure you can deal with it for a couple of hours in order to get rid of acne.
6. Baking soda is one of the best natural exfoliants you can use. Gently rub baking soda on your trouble areas when showering to remove layers of dead skin and help remove the acne.[FONT=wf_segoe-ui_normal][/FONT]