Are there any side effects to using Latisse?

Latisse has its origins in a glaucoma medication called Lumigan. Lumigan is directly applied inside the eye. When using Lumigan directly applied to the eye, there is potential for change in color of the iris of the eye. Latisse is not applied inside the eye. Latisse is applied with a brush to the upper eyelashes. Since it does not get into the eye, the likelihood of discoloration to the iris is low. In fact, this complication was not reported in clinical studies with Latisse patients.