This concentrated serum is a breakthrough formula which fortifies and rejuvenates lifeless lashes with patented Lash-GrowComplex. Multi-proteins immediately work to repair weak, thinning lashes and stimulate new growth so that they appear healthierandfullerwhile preventing future loss. Conditioners are also added to nourish lashes to protect against future damage. Thepen-styledelivery system allows precise application on the lash line where it is needed most - at the root. When used daily,results can beseen in as little as 3 to 5 weeks.