I have fine/low porosity and not very dense hair. Used a CV bar once and my hair hated it. My hair rarely tangles and it did with this bar. If I hadn't used soap bars previously, I would have never used another. I narrowed it down to the shea, avocado or castor oil. Was really careful with my future ingredients. I was able to determine that it was the castor oil. I've had issues with castor oil in products, too.
I've continued to use the bars for 4+ years with no problem. I feel that the bars help tighten curls and add volume. Natural soap/shampoo bars aren't for everyone. If you have really hard water, you can have problems.
Don't know if this helps.
3a (Corkicelli), highlighted, fine, low porosity
modified CG, since April '07
CG since 3/11/08
HGs: Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; DM MiraCurls Curling Gelly; UFD Curly Magic; Shescentit LIs; Sevi conditioners; Botanical Spirits Puree, CJ Repair Me