The biggest risk of using the drops is developing a sensitivity or allergy to either the active ingredient, brimonidine, or the preservative used, benzalkonium chloride, says Dr. Moss. This can show up as worsening redness, discharge, pain/irritation, tearing, and vision changes, he explains.

Currently, there is no generic for Lumify.

All of these drops carry these same two warnings on their labels: “Do not overuse as it may produce increased redness of the eye” and “Stop using and ask a doctor if: you experience eye pain, changes in vision, continued redness or irritation of the eye condition worsens or persists for more than 72 hours.”

While Lumify may not work better than other OTC decongestant drops, such as tetrahydrozoline (Visine Original), it seems to have less risk of rebound redness or tolerance. Because it's the new kid on the block, please don't jump to get it or any other red-eye drop without understanding what is causing the red eyes.