If you like to wash your hair every day... stop it! You’re actually ruining your hair. Beauty website BellaSugar.com says your hair looks healthier when the natural oils in your hair are allowed to stay there. They provide shine and protection, and your hair holds its style when those oils can remain in the hair. The better bet: Wash every other day, or every two days. If you’re worried about hygiene, a dry shampoo helps keep hair healthy in between the wet washes. Other things that can damage your hair: cold weather and excessive towel drying.