Our breath refreshing serum contains glycerin, panthenol, PCA sodium and more. It can be a strong sustainability care for your mouth fresh natural gentle safe hygiene, it not only provides an instant refreshment and can keep breath fresh for a long time. Its use is simple: 3 drops into your mouth, gargle for 15-30 seconds, do not swallow and gargle. After use, it can eliminate bad breath, protect oral health, and give people a fresh feeling all day long.