Panthenol, also known as provitamin B5, is an excellent ingredient that activates cell metabolism. Besides eye drops, it's used in many other products, including dry skin remedies, hair growth products, shampoos, and conditioners.
Although panthenol has long been included in eye drops, there have been very few studies that have investigated its detailed mechanism of action. Rohto Pharmaceutical conducted research on the mechanism of panthenol in order to apply it to the development of more effective formulations for improving eye strain in modern people.