When you think of the ultimate skincare secret weapon for smooth, even skin, retinol may be one of the first things that come to mind. To be fair, I have yet to come across a skincare expert that doesn’t swear by it. But if you’ve ever felt like your retinol doesn’t quite work as efficiently as you’d hoped, you may want to consider a more potent option. That’s where tretinoin comes into play.

“Tretinoin cream is a derivative of vitamin A and a topical retinoid,” says board-certified dermatologist and founder of Luma Dermatology Nupur Patel, MD. “In a skincare world full of equal parts clever marketing, fear-mongering, and science, it is an ingredient that has undergone real scientific scrutiny and stood the test of time.”