Is it true that the more expensive the clothes, the more they should be dry-cleaned? In fact, this is not the case. Dry cleaning uses a chemical organic solvent called perchloroethylene (dry-cleaning oil) to remove stains from clothing, and combined with certain dry-cleaning processes, it can cause many garments to deform or degrade. Wang Ruchang of the China Detergent and Cosmetics Industry Association points out that particular attention should be paid to the following types of clothing: 1. Synthetic fiber clothing: high temperature and organic solvents can make them hard. 2. Down jackets: dry cleaning can cause the down to lose fat, damaging its structure...