I used Wen consistently for well over a year through their auto mailer program. I used it every day, at least 1-2 times.initially, my hair was great. Slowly I started to notice it lacked luster and was becoming brittle and hard to comb through. The hair thinning came on slow. Now when I look at pictures from over a year ago… It is evident, awful, and sad. I've been off of Wen for 4 months… I am nursing my hair back to health and am waiting for regrowth. I am disgusted with this product. I hope my review can help someone.