I've been using Mac lipstick products for some time now but I had no idea why sometimes my lips would dry out or the lip color would crack. I was told by a sales rep that I should apply the prep and prime first followed by my lip color I purchased two. This product is amazing it keeps my lips moisturized throughout the day no cracking or peeling. Goes on smooth and eliminates that white residue! This is a must have when wearing your favorite everyday lip color !