Overview Undecylenic acid is a naturally derived fatty acid commonly used in antifungal treatments. It is widely utilized in over-the-counter (OTC) medications to treat fungal skin infections, particularly athlete’s foot, ringworm, and jock itch. Due to its antifungal and antimicrobial properties, undecylenic acid serves as an effective alternative to synthetic antifungal agents. What is Undecylenic Acid? Undecylenic acid is an unsaturated fatty acid obtained from castor oil. It is classified as an antifungal agent and is often included in topical medications. It works by inhibiting the growth of fungi on the skin and nails, making it a popular treatment for…