Tenax Uniblack Stain Step 1-1 Quart

I bought a white vanity/ black stone counter top combo from a big box home improvement center expecting the stone counter top to withstand everyday chemicals that one uses in the bathroom. I was wrong and the counter top easily bleached white (spots) using toilet bowl cleaner, which was accidentally spilled, and lemon juice used to neutralize the bowl cleaner. Researching the issue, I found out that many of the counter tops which people think are black granite are are 'doctored' to make them black and stain very easily ( true black granite will not stain with lemon juice.) I found this product and, after prepping the surface, I applied the stain, and it "re-stained" the areas affected, matching the original color. I did have to do it twice. Saved me a lot of time and money not having to replace the "black" top.

I have flame-finished absolute black countertops in my kitchen and bathrooms. Over time they developed some areas of lighter color and overall looked more dark gray than black black. Uniblack 1 and 2 seemed like the perfect solution, and come from Italy, where they presumably know stone.I prepped using softscrub, mild soap and acetone to remove any old sealer that might have been present. Waited 2 days for complete drying. Then I applied Uniblack 1 as shown on YouTube. It is highly volatile and toxic so good ventilation is a must. After waiting 20 minutes for penetration, I wiped off the excess with white cotton cloths that turned black and were discarded. The countertops looked great-deep black, just the right amount of gloss. The next day, I touched a countertop and my hand turned black so I wiped them off with more towels. Same the next day, and the day after that. I finally got to a surface that would show black only with some pressure being applied when wiped. But the color still kept coming off after daily cleaning for a week, during which I could not use the countertops.I emailed the company asking for advice but got no response.I decided to apply Uniblack 2, the wax, hoping it would seal the Uniblack 1 coat and not come off itself. Uniblack 2 is less vaporizing, but still needs to be ventilated. I wiped off the excess right away, as directed. The next day, I wiped some more, same for the next two days after that.I am still getting black color on white cleaning cloths (after discarding 20 as too far gone to wash). Basically I gave up and am using the countertops but if you are wearing white and rub your waist or sleeve on one, there will be color transfer.These Uniblack products are NOT suitable for kitchen or bathroom counter surfaces. Maybe if you had granite walls that were not going to be touched it would work to restore color.I have spent over 10 hours applying and then removing these unsuitable products, so be forewarned.

When applied and left wet this did make the granite on our island blacker. When the excess was wiped off and allowed to dry over a 3 day period, the color of the granite was only slightly darker than before applied. The instructions with this product is almost nonexistent. Perhaps we did not use the product as intended. However without instructions we’ll never know.

I found this to work easier than another product used. It provides a rich black to my honed absolute black granite. My only complaint would be that it does seem to "lift off" with the first time I wipe my counters with a damp rag. Maybe I didn't allow to cure long enough. Still happy with the purchase as it added color to an area that had what appeared to be calcium deposits left by water under a dish drainer. That was the reason for my purchase and it met that requirement for sure.

Hello. This product did not work for me. Did not dry or adhere to floor. Does anyone have any suggestions please? I would so appreciate it. I am on a fixed budget so this was expensive for mr Thank you.Otherwise this company was a pleasure to order from

Excelente producto para Quartzo y granito oscuro

IT DOESN'T WORK!!

If you're not a professional dealing with partially polished and unsealed granite, this product will likely do nothing for your countertop. I tried every available sealant stripper, then applied the Uniblack 1 and wiped it off as shown in the YouTube video. Looks great at first but wipe it down the next morning and you are back to go. So I repeated the process and later applied the Uniblack 2 wax which is indistinguishable from the Uniblack 1. Nada, nothing, no difference at all. There is little or no application advice online or on the container. I'm sure this product is useful to someone or maybe there are application techniques known only to Romans but if you are a do-it-yourselfer, save the considerable expense for something else.