Its okay, good at getting a lot of liquid out of the pimple or getting the white bud out of a whitehead however I do struggle to keep these on my face, even when I've put them on completely clean dry skin.
I've purchased these in the past and I'll continue to purchase them. They work soo well. And it's great that there's 2 different sizes so it works well when I have smaller pimples and larger pimples. I also use this on my nose sometimes when there's white/black heads and it seems to work really well for that too.
I have tried many pimple patches from low and high brands, Korean and US brands and I always go back to COSRX. These are miracle workers. After wearing them throughout the day or during sleep there is a noticeable difference in my acne. They are thicker, so will be noticeable under makeup. They stay on all night.