Easy to use

I found it very easy to use and it instantly refreshes old grout lines to look like new! I used this on our white tiled kitchen counters and island, the area that gets the most discolored from food. I used to use white paint with a small paint brush to refresh the grout in the kitchen, but that would take time and start to peel off and not last that long. If chunks of grout actually came out (rare), I assume Id need to mix some grout and fill it with that, but for discolored tile, I just quickly use this on top of my old discolored grout lines, and its fantastic, I would buy this again for my needs. it probably helps that the tile is white too, but if i go over the grout line onto the tile, it easily comes off the tile. I just got this pen, so i couldnt review the longevity or easy to remove yet. I also dont know how this would work in the shower where water gets on it all the time, our shower tiles dont have white grout and arent discolored. But for the kitchen with white tile and white grout, its so far ideal!

Wasted a lot of it just trying to get the paint on the vertical bath tiles. It would work better for flat surfaces. Gave up and bought a brush and enamel paint. However, I used the thicker tip for the bath floor and that worked well.

Covered my dingy grout but tip gets worn out quickly , they need to improve the durability of the applicator.

The white liquid inside the tube is very good, but it this product as it comes, is very hard to apply to the grout. The little brush as the end of the tube, very quickly breaks down like a tiny paintbrush that got squashed, and then it is of no use at all. I was able to take a ballpoint pen and take it apart and use the ink holder part, to insert it into the tube and force the release of the liquid (to leach out the white liquid) and apply it that way. It did a pretty good job, but it was a tedious process. It also takes several applications because the liquid springs back into its shorter application area and then needs more liquid to be applied to reinforce the area that I already applied. I believe that the application tip should NOT be a brush, but it should instead be a solid piece of plastic to apply similarly to an old fountain pen. That would be similar to the applicator of a Tide Pen (R) for getting out stains on fabric. I believe that that would work much better to apply the liquid to the grout.

I was a bit worried on getting this not knowing if it would actually work, our bathroom is very old and no matter how much it gets cleaned it always looked dirty. I decided to give this a try and I gotta tell you, I’m impressed! You can def tell the difference, & how much brighter the tiles look. I would get this again! I gave 4 stars because I do wish it was a bit more pigmented, I had to go over the lines about 2-3 times. Overall it’s a great product!

Pen application is my first choice for small & intricate work

I used this product 5 years ago in the bathroom floor of a house we bought. It had beautiful beige tile and hideous orange grout. After cleaning the grout with a paste of Oxiclean, I applied the pen. It covered completely and I have beige grout. It has lasted without reapplying for 5 years. The floor is washed every week. We recently bought a vacation condo with beige tile and orange grout in the shower. I used the white pen and the shower looks brand new. Now I ordered more for the floor

This pen is easy to use, and I would buy it again. My only suggestion is regarding how watery the sealant is. It takes a couple of coats to cover stains. I purchased another product to seal the grout in my shower in wider strips, and it seemed more like thicker white paint. It covered stains with one application. The pen is the easiest way to get the job done.

Basically, this stuff paints your grout. It does a fantastic job for about 15 minutes - then the tip becomes frayed and the paint runs out. Would give it 5 stars if it lasted longer. See my before and after photos of my kitchen tile counter. It doesnt clean up all the dirt in the cracks but does cover most of the uglies.