Hiya there, gorgeous,
If you've read my previous posts, I might be allergic to one of COSRX's main ingredients, but I can't be so sure yet, it's probably my skin was too dehydrated, hence sensitive and easily irritated by acids that I've tried from cosrx products (even though the concentration is low enough). So when I got COSRX PHA Moisture Renewal Power Cream, I still have to tried it, since the acid is PHA, which is less irritating than AHA & BHA (I have posted the full information here -it's in Bahasa Indonesia though), yet could give the same result as AHA even though not as fast as its sisters.
All the reviews I've found are positive, so it gave me more confidence. I've also done 2 weeks of patch test prior to using it for my entire face, it was alright so I continue to the next step, and here is my COSRX PHA Moisture Renewal Power Cream honest review: