I admit, the pen is easy to use and is thick enough to really cover. However, my bathroom is TINY. See pic. And I didn’t even get all the way through when the pen ran out. So I have to buy a second one to finish. This time it’s ok. But when it’s time to do again, I’ll look elsewhere. Ridiculous! Look at how small my bathroom is! I updated my review to 5 stars. Weeks after application, mopping, walking, drips from shower…it holds up lovely and actually looks better now. The white has blended in – at first it looked super white. I’m very happy with it and just order another tube to finish. An incredible difference. My tiny bathroom looks much brighter now. Small effort – huge rewards. Treat your apartment like a home. Clean up that grout.”