Here is a good discussion on helmets. Makes me want to use a full face forever instead of a half face. I learned that washing your helmet is not just to make it smell good but to rid the helmet of your body secretions that can damage the EPS liner and decrease performance.  It’s also ok to continue using a helmet that you dropped because damage occurs from a force hitting the shell with a corresponding weight inside the helmet in this case ones head.

Ride Safe Vespistis and fellow commuters!