Very annoying when your eyeshadow builds up after a while in the folds (crease) of your eyelid, the solution is an eyeshadow base (primer) which ensures that your eyeshadow stays better in place and doesn't build up in the folds. Good eyeshadow primers can also enhance the color of your eyeshadow. There are many different eyeshadow primers of different brands, I tested the BeYu Eye Base. BeYu Eye Base. The eyeshadow primer BeYu comes in a silver tube with screwcap and works hygienic. The primer has a neutral shade with a pearly shine and is suitable for every skin tone. The substance is thin, smears well ...