Tile Beauty Styling Pen Bathroom Waterproof and Grout Marker Pen 4ml Feature: Waterproof Grout Marker Pen is designed to instantly color and cover stained, dirty or old grout. Make all your bathroom, kitchen surfaces, tile floor, countertop or wall look new again. It restores grout to its color, making your home look like the day it was built. You can also change the color of grout by covering up stubborn grout stains. It is eco-friendly as it was scientifically designed to be odorless and…