Some people their hair are dry and some people also their hair are oily, if you have problem that oil build-up in your hair here is the tips that I have read that might help you.
What you need to do is after shampooing, rinse hair with a weakly steeped blacked tea. Tea contains an astringent-like acid called tannic acid, which can cut the oil. This is worth a try if you have oil build up in your hair this might help to reduce the build up & help look nicer as well.
Well, I also had experience having an oily hair. And it really is irritating especially when you need to meet someone for business purposes. I didn’t know that tea can actually help stop oil production on hair.