How long does it take for lumigan to begin to work?

Depending on each patient Lumigan should begin to work within a couple weeks of using it nightly. You should follow up with your ophthalmologist/optometrist to have your intraocular pressure checked regularly. If you notice a burning/stinging sensation in your eyes after you put it in at night this is normal, but if it prosists into continuous redness and irritation this may be a sign of an allergic reaction you have to this particular drop. Lumigan also has the same ingredent as the new eyelash growth drop "Latesse", so you may notice a change in your eyelash length and thickness in a couple weeks/months.