Apple cider vinegar, the fermented juice of crushed apples, is a popular home remedy that’s been used in cooking for hundreds of years. It contains acetic acid as well as nutrients like B vitamins and vitamin C, and it’s known for its antimicrobial and antioxidant properties. As such, it’s been anecdotally hailed as a treatment for many health issues and conditions, including psoriasis. Here, we explain three ways people use apple cider vinegar for psoriasis and psoriatic arthritis, and examine whether they really work.

Apple Cider Vinegar Scalp Rinse

Little research exists on the benefits of apple cider vinegar (ACV) for psoriasis, but the National Psoriasis Foundation (NPF) suggests that it can be used to help relieve itch from scalp psoriasis.

“Apple cider vinegar has anti-inflammatory, anti-bacterial, and antifungal properties,” says Sandy Skotnicki, M.D., a board-certified dermatologist at Bay Dermatology Centre in Toronto, Canada and author of Beyond Soap. “It also lowers the pH of the skin, which helps restore skin-barrier function, which can be reduced in psoriasis.”