This is the Saengwaldogam Tongue Cleaner. I think this product is quite famous on YouTube and other social media platforms. I heard that when looking for a tongue cleaner because of bad breath, the best one is the one shaped to fit the bumps and contours of the tongue, as that is how you find this cleaner. After using it just once, my mouth feels really fresh and there is no unpleasant, sticky feeling at all. Highly recommended! This product is a quasi-drug, Dentiste Plus White Breeze Mint toothpaste. Maybe it's because I don't like mint, but I get a slightly tingling sensation in my mouth after using this toothpaste. However, I can feel my teeth getting cleaned well, and it leaves my mouth feeling refreshed.