White Caulk Marker: Waterproof Silicone Colorant Paint, Stain Remover, Sink, Kitchen, Shower, Bathroom Tile - White, Narrow 5mm Tip

Tried to clean some stained caulk with soap and water and needed something more permanent. Tried this pen hoping it would work better. It does an okay job of 'masking' the stain rather than covering it. You can still see it's stained, but it will at least look somewhat better. The pen also runs out very quickly, so buy a few if you plan on needing coverage for any area of significance.

Don’t buy this expecting to solve your problems! Rented a home and the silicone/grout was gross. Tried to clean it and was still discolored so I ordered this, it just gave a really light tint and I personally thought I wasted my time trying it

I used this to touch up dingy apartment bathroom tile grout. No windows, high humidity. Nothing gets this crummy grout clean and management just pretends it's normal. So I cleaned the tiles real well, like always, let it dry and painted on the white stuff. The felt tip just kind of fell apart real fast but I persisted, and got some of the worst tiles to look better. After about a month the water and humidity started wearing tiny holes in the grout again and it's only a matter of time before the cheap workmanship and general neglect of apartments everywhere reclaims this tile grout. If you have to touch up a lot of tiles better order 5 of these at least.

This product is okay. It could use a better pen tip and more product on the inside. It did make my tub area look a little better though.

I bought this to use around our kitchen sink, where one strip of caulking has turned black from mold/water staining. While it didn't totally remove the black area, it lightened it up quite a bit, so that it's much less noticeable. It would be great if the tip were slightly smaller to get into tights spaces more easily, but it works well for what it is, and I was glad I came across it when trying to find a way to clean up around our sink.

It works but is not the easiest to make with applying. The coverage is not very smooth and have to apply multiple layers. I found using my finger after to smooth it was better.

This was bought to cover and seal a narrow strip of mold where the bath sliding door frame meets the bath tub. Theoretically it is a very good concept. In practice, the liquid did not flow easily. It covered about half the intended area, and that not very well. I gained the impression the product may be old and had dehydrated, but there was no expiry date. All told, i was not very satisfied with what is basically quite an expensive product. I would need to buy three of them to get the job done. A careful application of Kilz with a fine brush is a better solution to the problem. It has the added advantage of selecting a color that could be a better match.https://amazon.com/gp/product/B01NCJ1OMM/ref=ppx_yo_dt_b_asin_title_o00_s02?ie=UTF8&psc=1

The coverage is great for the first few tiles then I had to stop and keep shaking it. it only does a small area then it runs out. I ordered three pens and had to order three more, I hope that will be enough. I'm doing a shower stall with is standard size.

Nob broke almost immediately. Very thin and runny. Very poor coverage and was only needed to freshen up white silicon. Use a pure white nail polish instead I used the Barry m in the end and it worked beautifully with one coat and lasts whilst this purchase went in the bin. Don’t waste your money.

The beading around the side of the bath is silicone. It was, like so many products, meant to be mould resistant, but has proven not to be. So this Sealant Pen looked like the perfect answer.Except, it isn't. It REALLY isn't. The instructions state that you need to shake the pen a few times, then press the nib to get the sealant going. Next, according to the instructions, you run the pen along without using pressure. Again, nonsense. Unless you apply a significant amount of pressure, the watery tippex stuff won't come out. The nib is yet another failure, in fact a total misnomer. Rather than applying the liquid, all the nib ever does is absorb the stuff back into the pen. So you give it another shake to try and get the stuff flowing, and then find out the lid has holes inside it. So when you shake the pen? Yep, the residual sealant flies everywhere. So completely contrary to the instructions, you have to force the nib back into the pen with extreme pressure to get any of the stuff out onto the silicone, then try to avoid letting the nib come into contact with the liquid so it doesn't disappear. Suffice to say, this process takes AGES.

Helps get rid of Grout stains. Makes area look newly tiled. Takes a while to apply and won't be able to do a large surface area with just one pen. But a good item for small areas

Good for a quick cover, looked brilliant when first applied. Doesn’t last through cleaning so we were back to square one next time I cleaned the bathroom! Good option if you wanted a short term cover for selling your house, but not practical past a week!

Awful. Nothing came out of this at all. Don't waste your money!