I'd be in trouble without it, and even though the first time I bought it it was only around 2000 yen, I'm not sure if I'll buy it again. At first I didn't understand the need for a primer, so I was skeptical, but once I used it I couldn't let it go, so I've repurchased it several times and still use it today. It makes all the difference. There are many different types of eyeshadow, but when I use powder, I always use this. There are eyeshadows that act as a primer, but I think this is the only one that erases uneven color on the eyelids, leaving them clean and clear, so that the next eyeshadow you apply will have a clear color.