连衣裙面料是100%聚酯纤维的，为什么不可以水洗只能干洗？
Dress fabric is 100% polyester, why can't you wash it with water only dry cleaning?
干洗或是水洗服装面料不是主要决定因素，主要决定的是服装配件，如你的裙子，涤纶的色牢度好，干强和湿强相差不大，所以干洗的原因有可能是
Dry cleaning or water washing clothing fabric is not the main determinant, but the main determinant is clothing accessories, such as your skirt and polyester, which have good color fastness and little difference between dry strength and wet strength, so the reason for dry cleaning may be
1、服装有粘衬，水洗会造成粘衬与面料分离，面料起皱，补救办法是熨烫，是补救办法不是解决办法。
1. The clothing has sticky lining. Washing will cause the separation of sticky lining and fabric and wrinkle of fabric. The remedy is ironing. The remedy is not the solution.
2、服装配饰，服装配饰水洗可能会摩擦面料造成面料磨损，或变色，解决办法是将配件分开洗。不过，我个人觉得聚酯的衣服没有什么忌讳的，只要不用开水烫就行。
2. Clothing accessories, clothing accessories washing may cause fabric abrasion or discoloration due to friction, the solution is to wash accessories separately. However, I don't think polyester clothes are taboo, as long as they don't need to be scalded.