No empty marketing promises as expensive skin creams - this eyelash serum acts! After an estimated four to six weeks you have wonderfully curved, thick and dark eyelashes. For me as a blonde ideal, I need hardly mascara. Use this serum now for over a year, and the product is not yet empty, that you only need minimal amounts. I use it only every other day, which is quite enough. So do not be put off by the high price, it is worth it!