Great eyelashes don't just happen overnight. That's why it's important to note that LATISSE™ (bimatoprost ophthalmic solution) 0.03% works gradually and remarkably - starting at 4 weeks with full results after 16 weeks. Once you begin treatment, you could start to see results in as little as 4 weeks, but you must continue applying the topical treatment each night and follow the directions for best results. Remember results are gradual over time