Try getting a little bit victorian with it.

Back in the day, washing machines didn’t exist. Mass manufacturing didn’t exist. Clothes were very expensive so people couldn’t just wear a thing once, then put it in a machine to wash it. So they had other solutions that worked.

They would protect their clothes from getting dirty by wearing full coverage undergarments. Linen was quite common. This layer protects your actual clothes from the gross oils and stuff from your body. You have to wash the undergarment but your main clothing is kept clean and only rarely needs washing. Reduces the laundry to the minimal level that could be done by hand.