Lumigan RC is a brand name for bimatoprost ophthalmic solution, developed by Allergan. It is used to treat elevated intraocular pressure (IOP) in patients with open-angle glaucoma or ocular hypertension. The “RC” designation stands for “Refrigerated Container,” indicating that this formulation requires refrigeration. Lumigan RC works by increasing the outflow of aqueous humor, the fluid inside the eye, thereby reducing IOP. Common side effects can include eye redness, eyelash growth, and darkening of the skin around the eyes. It is applied as eye drops, typically once daily in the evening.