I cannot answer until I get my cheque from the company...

Not really! I don't seem to need strong proteins, but I like Mozeke's Carrot Protein Conditioner which I would say is a very (?) mild protein treatment. Want to try the Aubrey Organics GPB conditioner soon as I can afford it.
My hair is in the 4s, low in porosity, high in density and coarse.

Love: QB - all of it, Bobeam - shampoo bars, Darcy's Botanicals - Pumpkin Seed Conditioner, Coconut Cupuacu Pomade, KBN - Shealoe Leave-in, Oyin - Juices & Berries, Kinky Curly - Knot Today, Ayurvedic treatments, my Denman and the cloud of kinky goodness on my head that I get to play with!