Review on Waterproof Brown Grout Pen Marker: Tile Grout Colorant and Sealer with 5mm Narrow Tip (7mL) by Josh Goldsmith

This didn't meet our needs. It turns out that the brown I bought in the market is more like a medium brown, while the color of our solution is more like an espresso. Also, our lines don't have to be the standard narrow grout lines because the button on the handle is much wider and overlaps the tile. I thought I could still use it if I blended it softly and lightly instead of painting on it, but the color is too light and warm. Very noticeable. Luckily I just tried a little vertex. The pen itself is very easy to use, just like a marker. The paint dries quickly, but if you have a paper towel handy any "waste" can be wiped up if you do it right away. It also doesn't have much smell as they say. So, aside from the bump size and narrow color choices, it does what it says on the tin. I just want it to work for us.