NADAMOOGrout Pen White, 2 Pcs Large Size 20ml Tile Grout Paint Pen, Grout Shine Touch Up Repair Marker Tile Gap Coating- Restore and Renew Grout Line, with 2 Replacement Nibs and 1 Cleaning Brush

This product was very easy to use. Thoroughly cleaned and rinsed the grout and then applied the pen once it was dry. Used a razor blade to scrape the extra paint off of the tile surface where I went over or applied on the tile. I bought this product in 2021 (exactly 3 years ago) and I am just starting to see a need to touch up a couple of areas that have become slightly discoloured again. Absolutely incredible stuff!!!

This product is great. Easy to use and not messy. Did a good job making the grout look fresh and clean.

Convenient way to keep the bathrooms fresh. Easy to apply, but need more tips because they are easily worn out.

This would be 5 stars if it had stain blocking—HUGE visual improvement to grout lines that were stained vivid blue by a leaking toilet bowl time release cleaning cube. I mean BLUE DYE everywhere. I tried 4 serious cleaning products and the grout was permanently blue so decided to try paint. The dye was many months old so technically dry.The pen was easy to use and one pen with one nib lasted the entire project 4’x8’ floor—i used 8 applications on some lines. I do have leftover nibs and pen for future touch ups1 coat made a difference but it does not have a stain sealer so the blue dye would bleed thru as it dried. Probably would not have been as much an issue with just a grimy surface.I used about 8 coats over 3 days on the worst areas to get my final results which i can live with happily. All my work was on the floor so gravity helped the paint feed nicely. Couldnt say how a wall would be.Also my tiles were white and had a tiny white margin which made a big difference in how good the white paint looked because it masked any sloppiness. A dark tile would have been much harder for this perfectionist. You do need a steady hand. Overall a win! Ive included before and after pics.

Works amazing!! But could use more nibs. I used a paint brush at the end to get all the product out