This is a detergent that effectively removes water stains. - Brand: SUNSTAR - Product Name: Kirei - Application: Water stain remover I used it only once because I wanted to clean my kitchen sink. Remaining amount: 90% to 80% [Detergent also used in luxury hotels] SUNSTAR's professional-grade water-area detergent, used for over 20 years in hotel cleaning, is now available for home use. [Premium detergent that achieves a higher level of shine] Removes water stains, soap scum, and slime, which are mixed stains in water areas, with citric acid + 4 cleaning ingredients + high-cleaning agent (abrasive). It is also effective in restoring the original luster of stainless steel. [This one bottle cleans and shines water areas all at once] You can clean various water areas (kitchen, washbasin, bathroom, faucets, mirrors, dishes, etc.) with one bottle. [In addition to cleaning, disinfection, deodorization, and virus removal] Just use your usual sponge and clean as usual. Removes daily dirt. 99% disinfection of household water areas. Furthermore, it removes viruses of concern. [Product size]: 26.2cm x 20.0cm x 22.8 (width x depth x height) I am writing this only for this year, and I will take it to a recycling shop next year, so if you are considering purchasing, please purchase it as soon as possible. Thank you for viewing.