shampoo bar recipe

I'm new to soap and shampoo making, but I have spent several months just researching and trying to develop something for myself and my family. I found a product that I LOVE and would like to try and recreate something like it, but I'm struggling to figure out what ingredient(s) here were used to...

I tried making a shampoo bar with rice flour. I made it as simple as possible (no gardeners or thickeners) just to see the true effect of rice flour. It's now been 4 days of drying and the shampoo is still soft (like play dough). What do you recommend to harden it? I'm thinking maybe stearic...

Hi everyone! I just made a shampoo bar using Stephenson Syndapore melt and pour, plus 10 percent Shea butter, and 2 percent coconut oil. It looks nice, but I'm not getting any lather at all. Does anyone have any advice or know what I may have done wrong? Thanks!! Kathryn