I loved it except the color was wrong, not their fault.

Love this product! My shower floor looks like new with this grout cover. Before, grout was chipped and hard to keep clean. It has been over one month of daily showers and still looks great.

used this to cover some dark blue grout in the shower stall -- wow -- so far one pen has done almost half -- I'm going to order a few more pens to have on hand. I used the gray and it's covering up dark blue just perfectly. have let it sit for a couple of days and there's no bleed through after just one coat. the pen tip can be turned around, and you can sort of rehabilitate both ends to make it last longer. I also let the cartridge sit for awhile when it seemed to be running low and when I picked it back up I was able to stretch it a bit further. like I said one went quite a long way, but I'll likely need three to do an average size shower stall (that has a tub so the tile goes from the tub up ) Also the tiles are very close together, so the grout lines are very narrow --the pen worked well enough, and any excess on the tiles was easily wiped up during application. have not tested for water proof and longevity, but according to other reviews, it should hold up well.

It worked great on my floor. I bought a different brand at Lowe's and it did not work at all. The only problem is shipping it takes for ever but worth the wait

Just what I ordered and a good price