I've been using this for 2 weeks now and it hasn't failed me yet! I've previously used urban decay's primer potion and felt this was just as good but a little bit cheaper. My eyeshadow and eyeliner stayed put all day which is hard to do since I have oily lids. The only down side is that the product actually separates in the tube if it's been sitting there for a long time. When I first opened this and squeezed some product out, only the clear oil came out. I had to give it a good shake (not that it'd help much). Otherwise, I have no complaints about this product!