An important thing to keep in mind is that cosmetics companies don’t necessarily have the money that e.g. pharmaceutical companies do to push large-scale studies on their products, so lack of evidence usually means a study wasn’t done, rather than a study was done and found inconclusive.
If you haven’t heard of it before, the subreddit ‘SkincareAddiction’ has some great recommendations for what’s evidence-based and what works.
Thanks for letting me know! The issue was on my side; I’ll be deleting this post (hope this comment still reaches you).