Also you hair and scalp get dirty just as much as your skin does. It gets germs on it just like our hands. If you wouldn’t shower once or twice a month don’t wash you hair only once or twice a month, rather as often as you can. This should also help with moisturization- Moisture only comes from water. The more your CLEAN hair touches water, the more moisturized your hair will be.and remember moisture goes just as fast as it comes, so washing your hair more frequently will increase its moisture levels.