The first patented product in China creatively solves the problem that ordinary retinol is difficult to be used in cosmetics due to its low solubility, easy discoloration and very unstable characteristics through new nano-delivery technology. Retinal is the key substance of human endogenous vitamin A and eye sensitivity, which has very good safety. The research of retinal and vitamin A has won several Nobel prizes. Retinal is the a uniqueonly natural vitamin A with biological activity similar biological activity to retinoic acid but milder than retinoic acid. After clinical verification, the conversion rate of retinal to retinoic acid is 11 times faster than retinol, and the stimulation of collagen production is 1000 times higher than retinol. The nano encapsulated retinal developed by PuriPharm throughby using the proprietary nano liposome encapsulation technology effectively improves the solubility, stability and bioavailability of retinal, makes it easier to be absorbed, gives more effective play to its efficacy, improves the safety of the product, and expands the application scope of the product.