I used Latisse for about four months..two bottles. It definitely worked on my lashes. About a month later I noticed my left eye started to twitch..I assumed it was from the latisse, so I started using the product every other night. The twitching continued, so I stopped using the product. Still two months later the twitching continues when I talk. I'm so mad at myself for taking a risk for "longer" lashes. Don't risk it!