Avoid contact with eyes
For external use only
Keep out of reach of children.
Do not apply to wounds or damaged skin
Do not bandage tightly
Do not apply to irritated skin or mucous membranes

After a hard day's work, apply it to your sore muscles. It relieves tired, overstressed muscles.
If you ever slept the wrong way and you have a hard time moving your neck, have someone apply Arnica to your neck. Gently rub from the back of your ears to your shoulders and spine. Relax and by morning you will feel great.
If you suffer from arthritis, this relieves the pain.