I don’t knoooooooooow but I feel your pain OP.
I am JUST about keeping the worst of the frizz at bay with Frizz Ease and Umberto Giannini curl gel. But honestly it’s still not great.
I feel like I have tried everything and nothing ACTUALLY works.
colour wow was a pricey mistake.
rich conditioners make it coated and lank.
curl ranges generally make it worse, even though I am not trying to fight the curl.
blow drying (unless done by a professional) makes it bushy.
I generally air dry which improves the overall condition but it’s still frizzy.
silk pillowcase doesn’t do a lot, though I do
like using it.
microfibre hair towel same.
honestly I just despair. And I’ve kind of given up trying (but I secretly haven’t) at the age of 47 😩