I had a water leak from the corner tiles in the bathroom, the silicone I was using wasn't doing a good job and looked ugly and was turning black. I decided to try this particular sealant, I applied it with the brush it came with, it's liquid and doesn't stick at first, it needs about twenty-four hours to dry well and it smells a bit strong at first.... However, for the past ten days since I applied it, it's been doing its job just fine, I don't know how long it will last, for now, I am satisfied!