Arnica is applied to the skin for pain and swelling associated with bruises, aches, and sprains. It is also applied to the skin for insect bites, arthritis, muscle and cartilage pain, chapped lips, and acne.

Does arnica actually work?

It found that, when compared to a placebo, arnica lotion actually increased leg pain 24 hours after atypical muscle use. However, a 2016 review of studies found that arnica is both safe and effective at easing pain after surgery.

What is arnica best for?

People most commonly use arnica for pain caused by osteoarthritis. It is also used for bleeding, bruising, swelling after surgery, and other conditions, but there is no good scientific evidence to support these uses. Arnica is also used as a flavor ingredient in beverages, candy, baked goods, and other foods.