Latisse is the trade name for Bimatoprost 0.03% ophthalmic solution; it is the same medication used to treat glaucoma, marketed under the name Lumigan. To treat glaucoma a single drop is instilled into each affected eye once daily. When used to treat inadequate eyelashes, a drop is placed on a sterile applicator brush which is then evenly applied along the skin of the upper eyelid margin and the base of the eyelashes. Following application, the upper eyelid margin may feel slightly damp but it should not be wet. Any excess solution on other areas of skin should be gently blotted with a tissue.
If the eyelid margin feels wet or there is excess runoff of the solution, too much solution is being applied to the applicator brush. The only way Latisse would have any significant chance of altering (lowering) intraocular pressure would be if so much was applied to the applicator brush that the solution dripped into the eye. When used properly, there is very little risk of any significant Latisse entering the eye.
Latisse gives excellent result when applied properly, and more is not better. When used in excess, Latisse may cause abnormal growth of the lower eyelashes or hair on the nearby cheek skin; and it certainly results in product waste. Using Latisse more sparingly will still provide adequate lash growth and extend the life of the dropper bottle.
Your prescribing physician should discuss the risks and benefits of Latisse, as well as the proper application techniques.