Daniel Butler
MD
Daniel Butler, MD, is a board-certified dermatologist based in Arizona.
Acne at 40 Happens (and Is Totally Normal)—Here’s What To Do About It
Adult acne at 40 happens (and is totally normal). Inside, we talk to board-certified dermatologists about the causes and how to treat it.
Apparently You Can Wear Retinol During the Day—But There Are Rules, People
As retinoids infiltrate beauty shelves, a question arises: Can you use retinol during the day? Dermatologists reveal the truth.
