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*It is better to use it in the early stages of a blockage when the water is not flowing smoothly. *If you clean the pipes with this method regularly, you can use them without worrying about blockages. *If the water is clogged to the point that it is almost impossible to drain with hair, you should separate the pipes and clean them. *Sodium percarbonate is not a highly toxic substance that dissolves hair, but an eco-friendly detergent with excellent stain removal ability made of hydrogen percarbonate granules. *Ventilation is essential during work! *Sodium percarbonate can be purchased at almost all supermarkets and online. *If you live abroad, they say that sodium percarbonate is sold online or at Korean supermarkets. If you don't have it, oxygen bleach such as 'Yuhanzen' or 'Oxyclean', which are slightly more expensive, have the same effect because their main ingredient is sodium percarbonate (=sodium percarbonate). #Sink clog solution #Sink pipe cleaning #How to unclog a sink pipe