White socks turn yellow or grey due to sweat, body oils, and dirt. Laundry detergent residue and washing with colored clothes can also make socks look dull. This can make them look less fresh.

The right treatment can make socks bright white again

Lynsey Crombie says to use liquid detergent and baking soda to whiten socks

Baking soda helps remove odors and stains from white socks

Lynsey shared her sock-whitening hack on Instagram without using a washing machine

She hand washes socks with liquid detergent, baking soda, and a washboard

The washboard helps lift stains from socks

Washboards are simple devices for hand washing clothes with a ridged surface. They loosen dirt as clothes are washed. The ridges help remove dirt.

Lynsey fills a bucket with water, adds detergent and baking soda, and washes the socks

She scrubs each sock with a small washboard to remove stains

The socks are cleaner and whiter after rinsing

Lynsey recommends sunlight to keep socks bright white. Sunlight acts as a natural bleach and removes discolouration.