Careprost is a prescription eye drop solution used to enhance the length, thickness, and darkness of eyelashes. It contains the active ingredient bimatoprost, which is also found in the brand Latisse. Careprost is applied topically to the base of the upper eyelashes and works by prolonging the growth phase of the eyelashes, resulting in fuller and longer lashes over time. It is primarily used to treat hypotrichosis, a condition characterized by inadequate or sparse eyelashes.