A single lash is applied to each natural lash. The lashes come in various lengths and thicknesses from natural looking too outrageous! The bond lasts until the lashes naturally fall out, usually 2-3 weeks. Various looks can be achieved depending on the quantity of lashes applied to each eye. Refills are required every 2-3 weeks. Please note! Care must be taken, do not use oil based makeup remover as this weakens the bond.