Xylitol, a natural sugar alcohol, has a fascinating history rooted in Finland. Discovered during World War II when sugar shortages led Finnish scientists to explore alternative sweeteners, xylitol was found in birch trees' bark and became a key sweetener during times of scarcity. Renowned for its dental benefits, xylitol inhibits bacteria that cause tooth decay—a discovery that revolutionized oral hygiene products worldwide. Today, xylitol is widely used in chewing gum, candies, and dental products, contributing to healthier smiles globally while maintaining its Finnish legacy as a sweet innovation from nature.