I always used primers under makeup but most left my oily skin feeling slick, my makeup slid off in warm weather.I used this and fell in love! Fresh!,not oily,greasy, sticky or slippery! It gives a smooth as glass look and KEEPS your make up from fading and getting messy looking at the end of the day. I have been using the reverse lift line for years and my skin shows it when I don't use it, but when I found this I knew I had found the "Holy Grail" of skin improvers! I use it even without makeup and it still looks great! I've tried EVERY primer made but NOTHING gives the fine pored, flawless look that this does. For me...IT'S A MUST! ALSO, rub a bit in your palms and pat it OVER your makeup for a youthful look!