Cleans water stain汚れ thoroughly! Also usable on plastic Removes stubborn "water stain汚れ" from bathrooms, faucets, and washbasins, leaving them sparkling clean. Effectively removes "black grime" from bathtubs and "sliminess" from drains. Uses ultra-microscopic particles of 10 microns or less, so it won't damage bathroom materials and can be used with confidence. Cleaning Mechanism: The cleaning agent lifts the "water stain汚れ," "black grime," and "sliminess" in the bathroom, and the abrasive component "HA component (hydroalgerite)" removes them thoroughly. Features a natural herb fragrance for a refreshing cleaning experience. ▼ I've used various detergents, from cheap to expensive, but this product cleans the best by far. Please give it a try. ▼ It will be shipped via Yu-Packet Post, but because the size barely fits through the mail slot, it will be placed directly into a reinforced delivery bag with tape, which may cause scratches on the container. Please purchase only if you understand this. ▼ Currently discontinued and only available online, the price will likely increase further and become difficult to obtain. Price reduction is not possible. We have very limited stock remaining, so please consider purchasing soon if you are interested.