Perfect skin is something I've been trying to attain my entire life, and never had great success even after working with dermatologists and investing in great facials. Then, I read the book written by Beyonce's dermatologist and everything changed: how I thought about skincare, what I used on my skin, and how my skin looked.
If you've got the time, read Younger: The Breakthrough Anti-Aging Method for Radiant Skin by Dr. Harold Lancer. It is super technical, a study in skincare backed by science that convinced a nerd like me to completely overhaul my "beauty regime" (soap, water, never heard of night cream, you get the idea). If you don't have the time, just read this full post and you'll get the highlights (figuratively, and literally if you apply the advice...)