I tried washing a New Era cap. How to wash a NEWERA cap to keep it from losing its shape Sweat stains

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Detergent used
Emar Laundry detergent Liquid for delicates Refresh green scent 500ml

https://amzn.to/3tuLSk4

For those who absolutely do not want their cap to lose its shape
Ball Cap Buddy The ORIGINAL Cap Washer

https://amzn.to/3tJHFcB