Capsaicin works by effecting your nervous system. Substance P is a neurotransmitter that relays information and results in what we call pain. It blocks substance P and therefore reduces pain. When it is used topically it can relieve many different types of pain, from diabetic neuropathy, migraine headaches, back aches, arthritis, menstrual cramps and bruises.  Peppermint e/o for muscle/joint pain and headache relief as well as its soothing scent. 
  CAUTION: Be careful not to touch mucous membranes, especially eyes or lips.  Suggested to use gloves when applying to affected area.