Q.O.T.W: If you had to share one hair care tip, what would it be?

Question of the Week:

If you had to share one hair care tip, what would it be and why?

I know I ask this on Diva Spotlight and Littleman's Lounge but I would to hear from you all. It will be nice to have all of your tips in one place. I'm sure we can learn something from one another. :)