Dunno if this answer can help or not. But have you tried a natural gel for the frizz? Like aloe vera(heyfranhey) or flax seeds(naptural85).
Now for going product-free I plan to do this in the new year. No more commercial products for anything on my hair, skin, or face. Since the question is about hair I plan to pre-poo with olive oil, wash with clay (bentonite or rhassoul), and moisturize & seal with grapeseed oil, shea butter, and castor oil on a weekly basis.