I don't kmow specifically about this ingredient. But today's video of Dr dray highlights like all sunscreen fda approved ones ingredients are safe. And octabenzone is also safe. As per her it comes as unsafe as I'm labs they are used in huge quantities on rats. On humans there's nothing to prove unsafe. And even pregnant ladies can wear chemical sunscreen as per her

Coming to reequilsunscreen. Basically I've tried almost all korean sunscreen, then avene, then paula's choice ones, then dermafique, then Garnier ones. All of these broke me out

But this reequil ultra matte sunscreen was like magic from somewhere. Just love it and only use that one now. Had tried reequil tinted one also, but that broke me too

So atleast from experience, feel and safety from sun my review score would be 9 offf 10 for ultra matte