Our 7-day Nail Repair serum contains hydroxyethyl cellulose, maltoside and carbomer. It can help nourish nails for rapid growth while enhancing nail recovery and health and reducing the effects of nail breakage and injury. Its application method is very simple: first clean and dry the affected nails, then apply an appropriate amount of essence to the nails and epidermis, gently massage 3 Wait 2-3 minutes, and finally until the essence is absorbed, use for 7 days to help the nails grow and recover quickly.