Dermatologist Dr. Muneeb Shah’s Top Skin-Care Products (and a Peek at His Brand)

Differin Acne Treatment Gel ($13, originally $15)

"Adapalene would be my go-to product, and Differin is the company that brought the ingredient over the counter," Dr. Shah says. "It used to be a prescription, so it has tons of data behind it. It treats the four causes of acne, which are oil production, sticky skin cells, inflammation, and even acne-causing bacteria, by making it uninhabitable to the bacteria. It's the most effective thing you can do over the counter."

Check out our editor's review of Differin to see it in action.