|Granted, most people will not be wearing this type of restrictive head gear. I put this photo here to make the point that pressure from gear + sweat can = breakouts.|
Keeping any sweat from drying on the skin will help keep irritation and breakout away. Splash rinsing with water is your best bet to get all the sticky, sweaty goo off your face. No matter where you are, you’ll usually have access to water. Know that the longer the sweat stays (and dries) on your skin, the more potential for problems down the road. This is especially true if the drying sweat is an ongoing occurrence, like with sports that you’re involved with on a daily or several times weekly basis.
If you don’t have access to water, at least wipe as much of the sweat off your face as you can with your shirt or a towel, if one is available.
For more information, see: