Magnesium sulfate! aka Epsom salt
I've been experimenting with three products (not all at the same time!) containing it recently, and my 2c hair has been approaching 3a territory. That + closing in on 12 weeks CG is making my hair look great curly
(And to think I was STILL hating on my hair when I started CG as a last-ditch effort to "force myself" to like my hair).
The three products in question:
got2b kinkier spray gel
Paul Mitchell Round Trip