I shopped around forever to find a lash serum that was safe using while also being worth the cost. I had an allergic reaction to false eyelashes and which therefore damaged my real lashes. I then started using latisse everyday in the morning before starting my day and with in months even weeks I was noticing a difference right away. This serum is amazing and definitely worth checking out. I even used this product on my eyebrows to help grow out so I could reshape them.