I was wondering if anyone can recommend me a good gentle protein and sulfate free clarifying shampoo.

This will be my first time clarifying and I was going to lean towards the Curls clarifying shampoo, but no salons carry it in the current city I am in.

I do have a whole foods and vitamin shoppe, so if you're recommendations comes from there then that'd be great!!

Thanks so much!!
3b/3c Hair
High Elasticity
Medium Texture
Porosity- ?Unsure