1. Remove liner, cheek pads, "If Possible" and face shield "If Present".
2. If your helmet has a removable liner then take fill a small bucket or your sink with warm water and soap of your choice. I personally use shampoo because its genital on your helmet and smells good. I would stay away from dish soap or anything you wouldn't use on your body due to their harshness. You can also use products specifically designed for helmet cleaning found HERE
3. Use your hands to massage cheek pads and liner like the agitating cycle in your washing machine. After a few minutes of scrubbing your helmet liners allow them to sit and soak for at least 10 min and repeat the process.
4. After all the dirt, oil, and sweat build up is removed then wash out all remaining soap with cold water to keep the bubbles to a minimum.
5. Once you're positive all soap is rinsed out allow your helmet to air dry on a towel in from of a fan. If you're in a hurry then the wife's hair dryer will help speed up the process, but I don't suggest putting liner in your dryer due to the amount of heat.
6. To keep your helmet fresh in-between cleanings fa-breeze or Helmet Fresh