No one wants to walk around with armpit stains, but removing the mixture of sweat and old deodorant from clothes can be difficult.
Thankfully, the team at Pennygem have created a life hack video showing a solution.
To budge those pesky marks once and for all, mix one part washing up liquid to two parts hydrogen peroxide in a bowl.
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Next, pour the mixture onto the stain and sprinkle on some baking soda.
Finally, scrub the area gently with an old toothbrush, then pop the shirt in the washing machine as usual.
Hey presto, you should've removed that unsightly stain.