As any good plastic surgeon will tell you, it’s not just what happens in their office that makes a difference—it’s also the products you use on a regular basis. To keep her dry, sensitive skin looking its best, there’s one step Michele Koo, MD, a plastic surgeon and founder of skin-care line Private Practice by Dr. Koo, never misses: double-cleansing.

“Cleansing at night is extremely important to remove sebum, dead skin cells and environmental debris lodged inside pores,” says Dr. Koo. “Double cleansing may be important if you do not use a separate makeup remover. I personally use a very gentle cream makeup remover followed by my Dr. Koo Private Practice Exfoliating Cleanser. The first cleansing removes makeup, the second the dead cells and debris from the day.”

The importance of double-cleansing is simple. Dr. Koo says it gets her face nice and clean and ready to accept her other skin-care products. “It allows for the rest of my routine to really do their job,” she explains. And when she skips it, she notices that her skin “doesn’t feel as clean, and there tends to be a very slight residue.”

Generally, pros will recommend starting your double-cleansing routine with a gentle makeup remover, then going back in with an active cleanser to help clear away dead skin cells (when those build up, it can prevent the rest of your products from properly penetrating) and stimulate cell turnover.

Below, shop the two products Dr. Koo swears by to get the job done.

Lancôme Crème Radiance Gentle Cleansing Creamy-Foam Cleanser — $31.00

Dr. Koo uses this gel-to-cream cleanser from Lancôme as a makeup remover. She loves how gentle and hydrating it is. It’s made with soothing rose de France to gently melt away makeup without over-drying her sensitive skin.

Private Practice by Dr. Koo Anti-Toxin Cleanse — Gentle — $75.00

Next, Dr. Koo uses this cleanser to deeply clean her pores without stripping her skin. It contains glycerides to calm sensitivity, sugar beets to balance moisture, and low-level AHAs to delicately clean. “The AHAs in my cleansers are blended and buffered specifically to be gentle to preserve the skin’s ceramide layer to prevent stripping,” she says.

Want more expert routines? Learn a dermatologist’s shower routine:

Want to be the first to hear about the latest (and greatest) SHOP product drops, custom collections, discounts, and more? Sign up to have the intel delivered straight to your inbox.