It's frustating when your once-white socks turn an unslightlyshade of grey, with normal laundry washing methods seemingly unable to turn them sparkling again.

However, don't despair — there are simple expert-approved methods to restore them to their glory again. SockShop, experts in keeping socks fresh and pristine, suggest using 2 ingredients to turn them "snow white" again.

"You can't go far wrong by using some simple laundry soap on tired white socks," the experts explained. To supercharge this classic method, soak your socks in warm water with a generous squeeze of lemon juice first.

After soaking, thoroughly lather them up with your preferred laundry soap or detergent, place them into a plastic bag, and seal it up tightly.

Leave the bag overnight, and by the next morning, your socks will be ready for a regular machine wash. According to the experts, this method ensures your socks "should come out snow white."

Another household item for brightening dingy socks is baking soda. The experts describes baking soda as "a great weapon in your armoury for tackling less-than-fresh white socks."

Begin by soaking your socks in a warm sink sprinkled liberally with baking soda for a few hours. Once thoroughly soaked, wring them out and place them into your washing machine. Add an extra 150-200 ml of baking soda directly into the detergent drawer along with your regular laundry detergent. 

For socks needing a serious intervention, the boiling method is also recommended. Fill a large pot with water, add half a cup of lemon juice, and some laundry detergent.

Place your socks into the pot and bring it to a boil, then let them simmer for about 15-20 minutes. After boiling, remove your socks carefully, wring them out well, and run them through a standard wash cycle in your machine.

However, SockShop cautions that this intense method isn't suitable for wool socks, as "they need a gentler soak with lukewarm water."