I think we would need to know what products you are using that cause the build up.
Are you doing the no sulfate no cone routine? If you are using cones /beeswax/ for example they are not easily removed without sulfates.
I have not had any build up with my routine.
I'm sure more experienced curlies can help you if you let us know what you are using.
Hair Properties: normal / high porosity, medium density, fine/medium texture
Climate : hot humid summer, coastal GA
Co-wash: Suave Naturals everlasting sunshine
Rinse out :Tresemme Naturals Nourishing Moisture, GVP, Garnier Fructis Pure and Clean
LI: SMCHM ,
Gel: Biosilk Rock Hard gel my HG
Mousse : HETT, 3 in 1
Love ACV , pedaheh's gelatin treatment
My hair hates flax seed gel, everything Deva curl and Curl Keeper,