Latisse (Bimatoprost Ophthalmic Solution) 0.03% Eyelash Regrowth 5 mL (Rx)Latisse (Bimatoprost Ophthalmic Solution) 0. 03% Eyelash Regrowth is a prescription eyelash growth serum that helps to regrow thicker, longer, and darker eyelashes. The active ingredient in Latisse, bimatoprost, works to increase the number of eyelashes by stimulating hair growth at the base of the eyelashes. Latisse is the only FDA approved eyelash growth serum, and it has been shown to be safe and effective in clinical studies. Allergen Latisse