Washing socks so they last longer
Short answer: Wash at 40 degrees inside out and skip the tumble dryer. Heat and friction are the two things that wear a sock out.
Inside out
The wear happens on the inside where the foot rubs, and on the outside where the shoe rubs. Turn the sock and the dirty side is washed directly while the outer face is spared friction in the drum.
The temperature
40 degrees is enough for ordinary use and removes smell. 60 degrees only with fungus or illness, because it wears the elastic faster. See bamboo socks for men.
The drying
Hang them rather than tumbling them. The dryer makes the elastic brittle, and the elastic decides when the sock falls down. See bamboo socks for women and bamboo trainer socks for women.
Frequently asked questions
Should you use a laundry bag
It helps against them disappearing and reduces wear.
Why do socks go stiff
Soap residue and limescale. Skip the softener and use vinegar once a month.
Can you wash socks with t-shirts
Yes, it is the same fabric type and the same temperature.