I have 4b/4c hair and i dont know how to get my curls to fully define HELP ...???!!
If you have 4c hair by definition while your individual hair strands may curl and coil they will not clump (or group) together to curl in the same way. So the only way you will get nicely defined curls is by doing braidouts, twistouts or using perm rods.
i have hair around that type when i define my curls i either do a twit out ,or use eco styler gel to define my curls with a good leave in that doesnt interfere with it... and natural shea butter also works wonders
try using a hydrating leave in then the shingling method with Eco styling gel hapnatually.com has a good wash and go blog to look at for tips