I've been using Latisse for about 3 months. I missed a few days due to an eye injury, but for the most part I've used it nightly. My lashes are noticeably longer, but I see little or no increase in thickness or darkness at this point. I'm having some problems with redness and irritation, but it hasn't been severe enough for me to stop using the product. I will update this review in a few weeks as, hopefully, I will still have more growth.