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How to apply biofreeze
Put a latex glove on your dominant hand.
Since you'll only be applying the biofreeze using 1 hand, you only need to put a glove on the hand you'll be using to rub the gel in. You can use this hand to apply biofreeze to yourself or to another person.
If you don't have a latex glove, you can apply the biofreeze using a bare hand. Squeeze some biofreeze onto your glove.