Ask Beverly Hills cosmetic dermatologist Jason Emer, MD, which skin care products he likes, and his eyes will light up. He’s a product aficionado and is not shy about his love for all things complexion- and body-enhancing. Emer’s friends and family will attest that his own bathroom and medicine cabinets are packed with cleansers, serums, lotions, and potions that can treat or prevent anything and everything from sun spots and acne to less than luscious eyelashes, crow’s feet, and smile lines.

And he’s stocked up for good reason.

“I use everything,” he says. “I test most products on myself on my inner forearm, face, neck, behind the ear, or back of my hands for 3 to 6 weeks before I would even consider recommending it to my patients,” he says.

This N of one approach is not steeped in the rigors of evidence-based medicine, but it still provides Emer with powerful information on efficacy and safety—not to mention some less scientific, but still very important variables such as how good or bad a product smells and whether or not it goes on smoothly or goops.

For a glimpse into what’s on Emer’s radar (and body) this fall, download this showcase of his favorite fall products (PDF).