Intelligent Beauty Labs SMARTLASH is a Physician-tested, non-irritating lash enhancement treatment that completely transforms your lashes. If you desire a lash line that looks thick, long and full, SmartLash is the formula for you. The prostaglandin-free blend frees you from the harsh side effects of other lash enhancement products, and is ophthalmologist-approved for wearers of contact lenses and sensitive eyes. Optimal results seen in 60 days when used as directed, with some reporting results in as little as 7 days. Also beneficial for brow enhancement.