1. You Aren't Using Retinol
Retinol is one of the key elements to any skin care regimen, but it's a product so many women forget to use. If you aren't already using this beauty superstar, it's never too late to start. 

"Retinol is skincare gold," says dermatologist and contributor to RealSelf, Dr. Joshua Zeichner. "This form of Vitamin A rejuvenates skin and treats wrinkles."