Menthol stimulates cold receptors that create a cooling sensation on and under your skin, helping to relieve pain. Their formula has optimized the ideal menthol concentration.
Contrary to popular belief, ice doesn't reduce swelling but it does reduce pain. Biofreeze induces the exact same response as ice, only faster. You're also less likely to experience stiffness, skin irritation, temporary pain and numbness, and the inactivity required during application as you would with ice.