Once reading the instructions, I wasn't sure how I would feel about it, especially after it saying it may take 4 weeks for changes to occur; however, as it states, it works with your body's chemistry and although each person is different, I saw results within 2 weeks.
The result: pretty much true to its word. Longer and stronger lashes. I haven't had a lash fall out or even come out when removing makeup. It's really effective; I love it. Great product