洗衣液瓶上标出的分量指示不是平白无故的。汰渍公司指出，事实上放太多洗衣粉（洗衣液）会让你的衣服洗完后比没洗时看起来更糟。

That's because too many suds in the water can cushion clothes and prevent them from rubbing together. That rubbing action is actually what helps garments release stains and get clean. Splashing in too much detergent can also lead to excess product in areas that don't easily rinse clean, like cuffs and seams.

这是因为水中过量的泡沫给衣服起到缓冲作用，阻止衣服互相摩擦。实际上这种摩擦作用才能帮助衣服去污。放太多洗衣液（洗衣粉）还会导致袖口和接缝等一些不容易漂洗干净的部位有化学残留。

You're washing your sweaters without doing this first.

洗毛衣前没有先翻面

According to CottonWorks, you should always wash your sweaters inside out to prevent pilling. The rubbing that occurs during washing can cause textiles like wool and cotton to rub against each other and bunch up, creating unsightly pills. In fact, if you looked at wool fibers under a microscope, you'd see that they're actually covered in tiny scales. These scales can catch on each other and cause pilling, so flip your sweaters inside out before cleaning them.

CottonWorks网站称，你应该总是将毛衣反面洗涤，防止起球。清洗时的摩擦会让羊毛、棉等面料的织物互相摩擦产生难看的毛球。事实上，如果你用显微镜来看羊毛纤维，你会看到纤维实际上被小鳞片覆盖。这些鳞片会彼此纠结在一起，起球就是这么产生的。所以在洗毛衣前记得先翻面。

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