Are you using any rinse out conditioner, or just a co-wash? Sounds like you may need a good deep treatment, or to change the rinse out you are using. What products are you currently using?

My hair gets weighed down easily so I use lighter DT's, and when I co-washed I just kept it in as my rinse out too. So, I may not have the best knowledge in heavy conditioners, but there are many other wavies that can help you out in that department.
FIA: 2b/cFii
normal porosity