There are a variety of products designed to cater to different hair needs. There are also hair and hair oil that provide nourishing benefits. For those with dry hair, there are specialized serums available, as well as serums designed for bleached hair.
I am bald so no use there. I do, however, have a full, wany beard. As one would expect, I have tried a lot of beard products and all have left me feeling as though my beard was heavy and a little greasy no matter how little product I used. Started allowing a female cosmologist handle my beard and she uses this on me. I finally got some and a small amount goes a long way. Near instant results. Just a few drops on my damp beard, set, let dry and then finish with a low heat. My love says she loooooves how soft it is now. I have not used any other products like balm because I don't need it. Just a little serum and I'm good!!!!