Help!

I use the Kinky curly shampoo, conditioner and KCC.
My friends know that I only wash my hair once or twice a week. I always talk about the sulfates and the cones.

Some are skeptic, some are curious. I've persuaded a few to try going sulfate and cone free, but I'm not sure if I need to recommend specific brands to them because they are not curly girls. Some of them might have a tiny bit of wave, but nothing to write home about.

What products do I recommend to them?
They can still benefit, right?

Thanks~