Infinity Lash Eyelash Serum, with our exclusive lash-stimulating peptide complex, penetrates the lash line to help lengthen and strengthen natural lashes without the risk of serious side effects. The serum contains a blend of nutrients and vitamins to hydrate, condition and strengthen brittle lashes and is clinically proven to strengthen lashes by 72% in just four weeks. Use twice per day for 4-6 weeks for maximum results.