Because I am having a mascara crisis.
Have used YSL for the last couple of years but am so sick of it going claggy after 3 months, I begrudge paying £20 for a mascara that lasts 3 months.
So I bought a rimmel cheapy last time which I hate because to get any lash at all you have to trowel it on and then I end up with another set of lashed printed just under my eyebrow 
When I bought my chanel foundation they tried one on me there which was quite nice but no idea what it was.
Please tell me what you use and how great it is 