I have seen many 4s with short and very defined twas. After I bc'ed my hair was curly but I didn't realize how curly until I learned to properly moisturize it. For me proper moisture= defined curls and to do that I have to wash my hair several times a week, dc regularly and stay away from buildup. Others may have different methods. Now that my hair is long the no moisture no definition still applies. I use gels certain times of the year but they are not necessary for me but li is.
"More people would learn from their mistakes if they weren't so busy denying them." - Harold J. Smith.