WARNING!
This is an older article that may not reflect Dr. Mercola’s current view on this topic. Use our search engine to find Dr. Mercola’s latest position on any health topic.
Greasy hair might reduce the amount of ozone you breathe in. When researchers exposed samples of washed and unwashed hair to ozone for 24 hours, they found that the unwashed hair absorbed around seven times as much ozone.
Ground-level ozone can cause respiratory problems, and it has been associated with increased mortality. Having greasy hair could reduce your ozone exposure.