It is easily that white socks will become yellow after several times of washing. Then how can we make them clean again? Here are some tips.
1. Use toothpaste: first, put the white socks in water and rubbing for a few minutes without any detergent. Then wring them till dry, smear some toothpaste evenly on the spot. Leave them for five minutes or more, and then you can easily wash the dirt off with a soap. Have a try!
2. Use detergent: you can put them in the solution with detergent for half an hour before washing.
3. Use washing powder and soap: first soak them in the washing powder solution for about 10 minutes, and then rub, repeat for 2 times. Then smear soap on them and wait for 5 minutes (do not put water), rub hard for a while after that, rinse with water directly at last.
4. Use baking soda: washing white socks with diluted baking soda can do wonders.