Over the past 2 decades I've done a lot of driveway and patio sealing. Blundering in the early days by using Thompson's water seal, moving up the chain to products like rezseal and other similar commercial sealants.  What I like about this specifically is that its super easy to apply and clean up...no clogging your concrete sprayers.  This stuff looks like milk.  If you spray too much its easy to tell and white easy to see droplets bead up on the surface.  It doesn't take very long to figure out how much to spray.  This beads up water nicely and the promise of siloxane's 7 year durability is the reason I went with it.  Also, it works equally well on rocks and limestone as it does on concrete.  Finally this stuff isn't slippery...no need to sprinkle glass beads to keep from slipping in the winter or when wet.  I've notices that this is completely dry in about an hour.