1、If it is wool, need to wash with cold water and wool detergent. If it's not for wool, you can get a plastic cover for a few bucks in the sports shop, and then sound crazy and put it on the dishwasher, the top shelf. It looks like a new, perfect shape.
2、I always hand wash them in the sink. If it is wool, use a gentle detergent such as Woolite.
3、It may sound odd, but if it was summer I would wear the wet cap on a hot summer day and let it dry while wearing it. That helped keep its shape.
4、I actually hand wash my hats in the sink using cold water and a mild detergent. I have a micro fiber wash cloth that I use to gently scrub the fabric. The detergent I use also depends on the type of fabric of hat. If I am washing a wool baseball hat then I use a wool and cashmere wash made by The Laundress. I never wash my hats in the washing machine.
5、whatever you do DON’T put it in the washing machine. I made that mistake once and it basically ruined the cap, taking all the shape out of it, especially in the crown area, where it never stood up properly again.
So the best way is to scrub with a soft brush and soapy water. Then wipe the foam residue with a damp sponge (if any). Then let it dry. Do not put it in the dryer.
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