Lavender oil is relaxing, pain relieving and antimicrobial. Inhaling the vapors; either directly from the bottle, or diffused into the air through the use of a diffuser; relieves stress and helps reduce muscle tension, both of which increase pain levels. It can also help ease pain due to tension or migraine headaches, either by inhaling the vapors or by placing one drop of oil on the temples.
Lavender used in the bath is also very helpful for stress and muscle and joint pain. Used at bedtime it can help you to fall asleep, and to get better quality sleep. Studies have shown that poor sleep increases pain levels, and improving the quality and amount of sleep you get will help reduces those levels. (In combination with chamomile, there is an increased benefit for sleep, stress reduction and pain relief.)
Clary Sage
Clary sage is especially useful in massage oils for relieving muscle spasms, muscle aches and cramping; but should be used in very small amounts. Clary sage should never be used with alcohol or before a night when you plan to have cocktails or a glass of wine, since it increases the effect of all alcoholic beverages and can be dangerous. Used with chamomile, it is very effective for PMS and menstrual difficulties.
Arnica
Arnica is something of a wonder plant for body aches and pains. Not only is it good for such conditions as arthritis, but it is also beneficial to those suffering from more general complaints, such as muscle or joint soreness due to over exertion, swelling, bruises, and sprains. Although this plant is well recognized amongst the herbal community, its exact actions are still a little unclear. One thing that is known for sure is that arnica contains a decent amount of anti-inflammatory properties