Tyra Banks says you're washing your face wrong

Tyra Banks is known for her flawless skin (among so many other things), and now she's sharing her secrets with the rest of us. In addition to launching her new skincare line, Tyra Beauty Skincare, the model and entrepreneur has revealed one important tip to keeping your skin blemish-free: Don't wash your face with dirty hands.

Note: Get some more face-washing tips and tricks from a Teen Vogue editors in the video above!

"I can hear my mom's voice now, 'Tyra, you better stop washing your face with just your dirty little hands!'" Banks says in a YouTube video announcing the launch of her new skincare line. "'Don't you know all you're doing is spreading that dirt all over your face?'"

That's why Banks says she included a built-in brush cleanser in her line. "Why are there machines for dish-cleaning and drive-thru washes for cars, but I still have to cleanse my face without any help?" she asks. "Isn't that just rubbing the dirt around?"

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BEVERLY HILLS, CA - JULY 29: Supermodel Tyra Banks arrives at the CBS/CW/Showtime Television Critic Association's summer press tour party at 9900 Wilshire Blvd on July 29, 2013 in Beverly Hills, California. (Photo by Gregg DeGuire/WireImage)
BEVERLY HILLS, CA - OCTOBER 26: TV Personality/Model Tyra Banks attends The Paley Center For Media's Tribute To African American Achievements In Television at the Beverly Wilshire Four Seasons Hotel on October 26, 2015 in Beverly Hills, California. (Photo by Earl Gibson III/WireImage)
NEW YORK, NY - NOVEMBER 12: Tyra Banks attends the 22nd annual Glamour Women of the Year Awards at Carnegie Hall on November 12, 2012 in New York City. (Photo by Dimitrios Kambouris/WireImage for Glamour Magazine)
BEVERLY HILLS, CA - AUGUST 04: Tyra Banks arrives at Disney ABC Television Group's 2015 TCA Summer Press Tour at the Beverly Hilton Hotel on August 4, 2015 in Beverly Hills, California. (Photo by Jon Kopaloff/FilmMagic)
NEW YORK, NY - AUGUST 24: TV personality Tyra Banks leaves the 'Good Afternoon America' taping at the ABC Times Square Studios on August 24, 2012 in New York City. (Photo by Ray Tamarra/Getty Images)
Tyra Banks visits the New York Stock Exchange on March 15, 2011 in New York City. (Photo by: Charles Eshelman via Getty Images)
WEST HOLLYWOOD, CA - JULY 28: TV Personality Tyra Banks attends 'America's Next Top Model' Cycle 22 premiere party at Greystone Manor on July 28, 2015 in West Hollywood, California. (Photo by Vincent Sandoval/WireImage)
TV personality Tyra Banks signs copies of her new book 'Modelland' at Barnes & Noble 3rd Street Promenade on September 14, 2011 in Santa Monica, California. (Photo by: Tommaso Boddi via Getty Images)
BURBANK, CA - APRIL 26: Model Tyra Banks arrives at the 42nd Annual Daytime Emmy Awards at Warner Bros. Studios on April 26, 2015 in Burbank, California. (Photo by Angela Weiss/Getty Images)
LOS ANGELES, CA - AUGUST 30: TV personality Tyra Banks arrives at the 36th Annual Daytime Emmy Awards at The Orpheum Theatre on August 30, 2009 in Los Angeles, California. (Photo by Kevin Winter/DE/Getty Images for ATI)
LOS ANGELES, CA - AUGUST 20: Supermodel Tyra Banks attends the premiere party for Cycle 21 of 'America's Next Top Model' presented by NYLON magazine and the LINE messaging app at SupperClub Los Angeles on August 20, 2014 in Los Angeles, California. (Photo by Michael Tullberg/Getty Images)
WATCH WHAT HAPPENS LIVE -- Pictured: Tyra Banks -- (Photo by: Charles Sykes/Bravo/NBCU Photo Bank via Getty Images)
NEW YORK, NY - SEPTEMBER 21: Tyra Banks attends the 4th Annual WIE Symposium at Center 548 on September 21, 2013 in New York City. (Photo by Paul Zimmerman/WireImage)
HOLLYWOOD, CA - JANUARY 14: Tyra Banks arrives at the NBC And Time Inc. 50th Anniversary Celebration Of Sports Illustrated Swimsuit Issue Hosted By Heidi Klum at Dolby Theatre on January 14, 2014 in Hollywood, California. (Photo by Steve Granitz/WireImage)
NEW YORK, NY - MARCH 15: Tyra Banks attends the Endometriosis Foundation of America's 4th annual Blossom Ball at The New York Public Library - Stephen A. Schwarzman Building on March 15, 2012 in New York City. (Photo by Theo Wargo/WireImage)
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She's right-ish, New York City dermatologist Doris Day, M.D., author of Forget the Facelift, tells SELF. "She's not wrong in the idea that you don't want filthy hands touching your face," Day says.

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But whether or not using your hands to wash your face is bad for you depends, to a certain degree, on when you wash your face. "If the first thing you do when you come home is wash your face, wash your hands first," Day says. Why? When you're out and about, your hands can get covered in germs, bacteria, and dirt that aren't great for your skin—and can make you sick.

If you only wash your face before bed and you're home for a while first, you probably don't need to wash your hands first since you've likely already washed them at some point before then, Day says.

Ted Lain, M.D., a dermatologist practicing in the Austin, Texas, area, agrees. "In the perfect world, yes, it is better to wash hands prior to washing your face," he tells SELF. However, he says, the soap used for your face will clean your hands, too, as you wash and rinse. If you know that your hands are dirty, though, he still recommends sudsing up first.

Gary Goldenberg, M.D., medical director of the dermatology faculty practice at the Icahn School of Medicine at Mount Sinai, tells SELF that he also recommends washing your hands before you touch your face, but points out that just by getting your hands wet to wash your face, you're rinsing away some dirt and bacteria.

While nearly every face wash commercial out there shows someone soaping up her face with her hands and splashing it clean with water, Day says using a wash cloth or cleansing brush is a much better way to go. "You cover more area and cover it more effectively," she says. However, Goldenberg cautions against using anything too abrasive, especially if you have sensitive skin, acne, or rosacea—a rough cloth or brush can make those conditions worse. You should also clean your brush or cloth regularly (gentle soap and warm water will do the trick), and store it in a dry place to avoid bacteria buildup.

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