Nerve Rejuv It states you is definite to get eight hours of heat which in turn will restore circulation to the affected region. It is recommended that you wear the wrap for that full eight hours come across the affect. With the front within the package it states “Powerful Pain Relief oil and Deep Muscle Relaxation”. Unfortunately I can’t attest to this product’s express. In fact, this is likely the worst waste of cash I have ever invested on a product seeking Pain Relief oil.