What problems should be paid attention to when cleaning erotic underwear? Most women like to buy sexy underwear made of pure cotton or silk, because this kind of sexy underwear is not only fit for the skin, but also very comfortable to wear. But what you need to know is that no matter what raw material is used, the erotic underwear is processed by dyeing and other methods. Therefore, even the original unopened and packaged erotic underwear will inevitably have dye and chemical residues.