The only place to apply careprost medication is the eye. Bimatoprost eye drops are prescribed at a dose of one drop per evening for the affected eye. Careprost should always be used exactly as prescribed by your physician or pharmacist. If you're unsure, ask your pharmacist or doctor. Avoid using more than once a day since this may decrease the treatment's effectiveness. The experts advise waiting at least five minutes between using Careprost and any other eye medication if you take them together. It functions by facilitating blood flow to the interior of the eye.