It’s good: to put it simply, my eye shadows don’t Budge when I use this item. Says one reader, along with other readers concur. I set it to the final test on holiday Last summer, share another user. My shadow did not budge through hot weather, sea air, waves, or long days on the beach. Other readers say you will not see shadow spillage. In case you’ve an issue with your shadow crawling around and showing you in places where you do not want that,simply attempt this primer once and you will not be without it, gushes one user.