This is a great sunblock and helps with my oily skin. My face gets oily throughout the day a lot that I had to wash my face every 2 to 4 hours. This cut that down to every 8 hours. I haven't tested the water proofing of it, so I'm not sure how it holds up. But, if it's able to absorb all the oil that my face makes (as disgusting as that sounds) then I believe the waterproof works great. There's also not greasy like texture like a lot of sunblock out there, so I highly recommend it for your face.
I used this at the beach on vacation and it worked really well. I tried to stay out of the sun as much as I could and used this on my face. Felt kind of like a moisturizer but then dry one it absorbed in. Not oily or greasy, my skin felt good with no sunburn and barely changed color. Was hot and humid so I was sweating but never had to reapply. I would not recommend if your goal is to get tan and sun damage your skin though. If you are older like me and don’t want any wrinkles or sun damage then this is good stuff.