I discovered perricone md about two years ago, and I've been using it ever since. I'm 33 and most guess I'm about 25ish. It's truly a wow product. Absorption It aborsorbs great, and doesn't leave my skin feeling greasy. Doesn't Clog Pores It absolutely doesn't clog pores. It leaves my skin flawless. Effectiveness My skin has never looked better. In fact, when I run out and have to use another brand before I can get more, my skin looks dull.