A bath detergent that can be left in the bathtub overnight.Contains a fruit acid component to decompose dirt such as red dirt, soap scum and oil.Just put one bag, no need for cumbersome weighing.How to use:Put 1 bag (200g) of this product taken out of the plastic bag into 180-200L of hot water in the bath and dissolve well.The higher the temperature, the better the cleaning effect. We recommend using immediately after bathing (hot water around 40 degrees).Please confirm that hot water is more than 10cm above the bath kettle hole.Dip the bath accessories (basin, bath chair, bath lid, stir bar, shampoo stand, etc.) into the remaining hot water.If you have a lot of dirt, put the dirty side down.Leave for 2.4-6 hours.When it becomes transparent, washing is completed.If you do not remove the hot water mud completely, the water scale or hot water mud may come out during bathing. Rinse it well and rub lightly with a sponge etc. where dirt remains.. Ingredient: Carbonate, sodium percarbonate, organic acid, sulfate, sequestering agent, L-arginine (amino acid).