We have an older home, over 70 years old, with lots of tile work. Much of the grout, particularly the floors, though sound, is discolored. We have found these pens to be a simple and economical way to bring the grout lines back to an attractive state. It takes a bit of doing to get used to using them well, but once you do, it goes very fast. The results are wonderful. We have repurchased pens several times and are very happy with the result. We have been using them long enough to know that the result is long lasting and stands up just find to use and to cleaning. We are extremely happy with the economy, ease of use, and beautiful results of these pens.

I used the pen on my white tiles in the bathroom. The results were amazing.

This pen worked nicely for touching up, but I was not able to finish the job because the tube ran out before I got to the shower seat. I would say you need two tubes for retouching a shower floor. It has not been six hours so I have not tested it fully. Looks nice now.

Wish could use for wider amount.

I wasnt even finished touching up the relatively few areas of grout that had mildew stains in my small shower, and the tip became frayed and was impossible to get a precise application and even get more solution out of the tube. Update: After I submitted this review, the company contacted me right away, apologized, and wanted me to be happy with the purchase. The rep, Ashley, explained how to use the product to avoid the issues I had. If only I had known those instructions beforehand! She also refunded me the purchase price AND said shed send me replacement tips. What incredible customer service! I am changing my rating from 1 to 5 stars. I will definitely buy from this company again.

In all seriousness, some reviews scared me because they acted like they used this pen on one strip of grout & it ran out. That is NOT true at all!!!! I am using these on my whole kitchen floor & they work so well and do not run out quickly. I think people pushed too hard at first and/or they didn’t try that hard to use it correctly, lol. They’re awesome & totally worth it!

This is one of those products that has a lot of upsides but several downsides. To preface, I have a roughly 20-square-foot white tile floor in my apartment bathroom. When I moved in, the grout was very discolored and made the tile look dirty. I was extremely skeptical about this product, but it was a reasonably priced solution and a top seller on Amazon, so I gave it a shot. I followed the very simple directions on the pen (clean floors, remove cap, shake pen, use), and was initially amazed by the results. My nearly gray tile grout was being transformed back to white. Although, after I got through about 6 square-feet of tile, the pen tip started to fall apart. Was it still usable? Yes. Did it hinder the quality of the paint job? Also yes. Additionally, the paint ran out much quicker than expected. I was able to get a single coat on the entire tile floor, but the 60 meters of coverage they claim is a little far fetched. Nonetheless, my tile floors look good. A couple tips (no pun intended): get two pens because the coverage is less than advertised, apply 2 coats, REALLY clean the floors before you start (I didn’t deep clean nearly enough and the grime made the paint job much harder), consider another solution unless you have white tile as well (I feel as if this pen would not be great if you needed to be precise), and don’t push as hard on the tip to increase the pen’s longevity. Hope this helps! Still a good product, just a couple things to keep in mind before you buy.

Applicator Tip should have a finer bevel for more precise application

Works but not much in the pen. Would need many to cover a large area.

Product is excellent,however, tip of pen wears out too quickly and there is ink still left in pen