Lecanoric acid is primarily used in pharmaceutical and cosmetic applications due to its antioxidant and antimicrobial properties. It has shown potential in skincare formulations, where it helps protect the skin from oxidative stress and environmental damage. Research also explores its role in anti-aging products because of its ability to inhibit enzymes involved in skin aging. Additionally, lecanoric acid exhibits antifungal and antibacterial activity, making it useful in developing natural preservatives and topical treatments for infections. Its presence in lichens has led to interest in sustainable extraction methods for use in natural health products and alternative medicine.