Earths Care Muscle and Joint Rub - 2.5 oz Bruises, Aches and Strains. Natural Pain Relief No Parabens No Animal Testing No Petrolatum Allergy Tested No Artificial Colors or Fragrances Non-Irritating No Phthalates Camphor, a versatile natural medicine for topical use, is derived from the bark of the Camphor Laurel tree and related species which are native to Southeast Asia. Earthâ€™s Care Muscle and Joint Rub contains Natural Camphor and brings natural relief from the minor pains of bruises, muscle aches, strains and sprains. This unique formula quickly relieves these painful conditions while also soothing the skin with natural moisturizers like Vitamin E, Beeswax and Shea Butter. It is ideal for use on minor injuries, on sore muscles after sports activity and is effective for minor backaches and arthritis.