Natural soap bars are made of saponified oils. They are fairly mild, just remove residual oils/butters, etc. Won't remove the chemicals.

There are bars that contain SLS (Lush calls their bars solid shampoo.) While they would remove the chemicals in your products, you wouldn't get the same results as with the gentler bars.
3a (Corkicelli), highlighted, fine, low porosity

HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic; Botanical Spirits Jellies, CJ Repair Me, Aloe Fix