Enhances massage for sore muscles. Certified Natural Personal Care. Dermatologically Tested. Arnica Muscle Massage Oil Leaves Muscles Feeling Soothed. This massage oil is an invaluable recovery tool for any active person. Arnica extracts combine with sunflower and olive oils for a plant-rich blend that helps sore muscles feel soothed through nurturing massage. Skin feels firm and looks visibly renewed, and the scents of lavender and rosemary essential oils stimulate your senses.