MAPEI UltraCare Grout Refresh, Universal Grout Colorant & Sealer, 8 oz Bottle – Easy Grout Restoration & Protection, 5093 Warm Gray

Wow I'm so impressed with this product. I have a very large area to do and still have plenty left from one bottle. I love my tile again!

I don't usually leave reviews but this product is FANTASTIC! My grout is dark brown which I love but after cleaning my tiles with an acidic cleaner the grout lost some of itself to deep color & some areas were very light. So here's a great hint..I thought it looked too much like "paint" when applied as directed, so after I painted it on (with a soft toothbrush) I immediately wiped down the grout w/ an old, damp T-shirt. It looks softer now, the color is the same just not as "paint-like." This also allowed me to clean the tile at the same time so no having to go back over later. There are so many colors & they are true to what you get.

Works perfectly!!!!!

Coverage was high quality but it does leave a different grout texture than typical. Goes on and has a dried paint consistency.

I was VERY skeptical of this product from reading reviews, but it worked GREAT for me--but read how and why...I read where people used a paint brush, and I thought that was rubbish and more tedious to even contemplate. Um...they were right--do it that way. I did my entire kitchen floor NOT using a teeny tiny brush and the clean up was hell. But, later, when I did my mudroom, I actually taped it off ( yes, used masking tape) some lines. I did not tape off each square, just vertical lines. I wasn't looking to mask it perfectly, just enough to cut down the cleaning process afterward. WOW...what a difference. Sure, once I took the tape off I had areas that were overlapped with tape and obviously missed, but nothing that was too crazy. And I used a small brush.I would not--NOT NOT, try to change the color too far from what the grout was originally. I had black grout, and bought the black--it is more of a dark gray but it was totally fine. I doubt you would have much success going from dark to light. My grout was chalky and discolored from sediment and cleaning build-up...none of which I was ever able to remove. This product made it look like the day the floor was first grouted.Make sure you have a small STIFF brush--like an artists brush from a craft store. Have a pail of water and some paper towels to catch any big spills as you go.SHAKE the bottle before starting. I read where someone said the bottle was hard to squeeze?? I just used utility scissors and made the spout of the bottle slightly bigger. I also poured some into a small disposable bowl.When I painted it on, I let it dry for more than an hour, peeled off the tape and then took my time to just clean the overage off of the tile, Don't wet it all down like you do with fresh grout.I am exhausted, it took 8 hours to do my kitchen ( average) and my mudroom. I do not plan on washing my floor for a few days so this has a chance to cure.Good Luck!

Excellent product! I applied it to the grout lines and then used a toothbrush to scrub it in. After waiting 15-20 minutes, I dampened a microfiber cloth and wiped it off. It does take patience.Color: Cobblestone

Last owner installed this back splash with what appears to be some type of concrete.It was brown and dark and didn't look nice with the color tile in my opinion. I was worried I would have to go darker so when I read the reviews here and saw how it was covering dark grout lines I figured it was worth a shot.Purchased in the frost color which looked like a light gray. Cleaned everything really good two days prior so it would have time to dry.Directions give two options for applying depending on the tile. One is a wet method where you let it sit for a few minutes and mist with water them wipe, second was dry method where you wipe immediately with a dry paper towel or microfiber cloth.I started with the dry method and after about five minutes realized my grout was absorbing the color so fast I could wipe with a wet microfiber without it smearing on the tiles and without it pulling from the grout.Picture 2 shows it after two coats, still drying. I used a stiff small stencil brush for application. I know people complained about the nozzle clogging. They probably shouldn't be attempting home improvements as the top unscrews and you have to unscrew said top to remove the seal. I did not use the nozzle I just dipped the brush in and carried on.First pass the color looked bright white, I used the stencil brush to really push it into all the nooks and crannies. Wiping with a wet cloth as I was going. I didn't have to worry about being neat, it wiped off extremely easy from my tile. By the time I wrapped around the entire back splash, about 20 minutes, the starting point had absorbed enough for a second coating.It dried true to color, covered the brown entirely and changed the entire look of the kitchen. All this completed in about 40 minutes, granted we have large rectangular tiles and there was not as much grout lines to work over so timing will vary.I used maybe 1/4 of the bottle.I could not recommend this product more highly. It did exactly what it advertised it would, it was extremely easy and super cost effective. Super happy with the end results.

I have used this several times to re-color grout. It takes time, but you can change the whole look of a room by changing the grout color.