I got this from a cosmetic doctor that I know, she recommended it to me as I was sick of getting my lash extensions done and the lash extensions had ruined my natural lashes. I wasn't expecting anything spectacular as my own lashes were broken off to about 1-2mm length from the extensions, but after about 3 months WOW!!! Huge lashes that are thicker and darker! I rarely wear mascara now :) a tube lasts ages and it has not affected the colour of my eyes which are blue/green. I love this product will continue to buy it!