This glue is NOT for self applications, it must be used by a licensed professional only.
For longer lasting lashes: A primer will need to be used to thoroughly clean the lashes for a proper long lasting bond. Always shake glue for at least 30 seconds before each use and close the cap tightly to prevent any air from entering the bottle. (Any contamination, such as makeup or oil, can drastically reduce the bonding life and strength of any glue. This can also prevent the bond from grabbing on to the natural lash since the adhesive will not bond to a contaminant. Washing the face with a makeup remover or using makeup remover wipes will not remove all contaminates from the lashes.)