Demi Lovato Shows Off Her Freckles Demi Lovato posted this photo to her Instagram account, Oct. 3, 2016, with the caption "Freckles." Demi Lovato/Instagram

Gwen Stefani Goes Barefaced for a Selfie Gwen Stefani posted this image to her Instagram account on May 13, 2016. gwenstefani/Instagram

Cindy Crawford Looks Fresh Faced Cindy Crawford posted this photo of herself without makeup to her Instagram account on April 9, 2016 with the caption, "Apres workout and sauna." Cindy Crawford/Instagram

Demi Lovato Goes Makeup Free Demi Lovato posted this image of herself to her Instagram account, Jan. 18, 2016, with the message: "Happy #NMM my beauties." ddlovato/Instagram

Kaley Cuoco Goes Fresh Faced Kaley Cuoco is spotted leaving a hair salon in Studio City, Calif. on Jan. 14, 2016. Dmac/Fameflynet Pictures

Courteney Cox Goes Makeup-Free Courteney Cox visits a mystery man in Los Angeles, Jan. 11, 2016. Splash News

Marcia Cross Goes Barefaced for Errands Marcia Cross stops to send some packages at the Post Office in Brentwood, California on Dec. 24, 2015. FameFlynet

Kate Hudson Goes Makeup-Free in NYC Kate Hudson is spotted at JFK Airport, Dec. 18, 2015, in New York City. GC Images/Getty Images

Lindsay Lohan Shows Off Her Clear Skin Lindsay Lohan posted this photo to Instagram on Dec. 13, 2015 with the caption, "Sauna. Rejuvenate. Rehydrate. Repeat." Lindsay Lohan/Instagram

Katie Holmes Goes Makeup-Free to Shop Katie Holmes picked up a the new VR View-Master at Target in Los Angeles just in time for the Holidays, Nov.16, 2015. Courtesy Jack Hammer

Jennifer Garner Steps Out Fresh-Faced Jennifer Garner is seen on Nov. 10, 2015 in Los Angeles. Getty Images

Jennifer Lopez Whips Up a Meal for Pal Leah Remini Leah Remini posted a video to Instagram on Nov. 3, 2015 with the original caption, "My cute girl @jlo making us dinner." leahremini/Instagram

Christie Brinkley Stuns Without Makeup Christie Brinkley posted this image to Instagram of her getting ready to appear on HSN. christiebrinkley/Instagram

Jennifer Garner Eschews Makeup to Grocery Shop Jennifer Garner is seen on Oct. 25, 2015 in Los Angeles. GONZALO/Getty Images

Keira Knightley and her husband James Righton seen out and about in New York City on Oct. 7, 2015. NIGNY/Splash News

Gwyneth Paltrow Goes Makeup-Free Gwyneth Paltrow with wet hair and no makeup arriving at a studio in Culver City, Calif., Sept 24, 2015. X17online.com

Claire Danes Goes Makeup-Free for a Run Claire Danes breaks a sweat to keep her fit physique while jogging around Brentwood, CA, Sept. 23, 2015. Bella/Broadimage

Jennifer Garner Goes Makeup Free in Rainy L.A. Jennifer Garner walks her daughters to school on Sept. 15, 2015 in Brentwood, Calif. AKM-GSI

Halle Berry Steps Out Without Makeup Halle Berry goes make-up free during a day at Disneyland with her children, Aug. 26, 2015, in Los Angeles. WENN.com

Sally Field Goes Fresh-Faced to Run Errands Sally Field is spotted leaving the Whole Foods in Brentwood, Calif. on Aug. 18, 2015. X17online.com

Zendaya Clowns Around Without Makeup American pop star Zendaya lets her fans take her on a tour of central London, Aug. 9, 2015. Xposure/AKM-GSI

Christie Brinkley Says Arrivederci to Italy Christie Brinkley posted this photo on Instagram, July 22, 2015. christiebrinkley/Instagram

Jennifer Garner Goes Makeup-Free in Santa Monica Jennifer Garner is seen while out shopping for children's clothes in Santa Monica, California on June 8, 2015. FameFlynet

Jennifer Garner Goes Casual and Makeup-Free Jennifer Garner runs errands on May 28, 2015 in Santa Monica, Calif. Fame/FlyNet

Laverne Cox Shares a Makeup-Free Selfie This image was posted to Laverne Cox's Instagram account on May 27, 2015 with the text, "Finally a few days to relax. I feel so privileged to be able to do work that I love and very privileged to be able to take time off occasionally. I take none of it lightly. Always good to have days with no makeup to let my skin breath. #washfacenobase #TransIsBeautiful." Lavernecox/Instagram

Melanie Griffith Goes Makeup-Free to the Gym Melanie Griffith at gym for her daily routine, May 14, 2015. x17online.com

Cindy Crawford Stuns Without Makeup Cindy Crawford enjoying her Sunday afternoon, in an image she shared to her Instagram account, May 3, 2015. cindycrawford/Instagram

Ivanka Trump Poses without Makeup Ivanka Trump posted this photo to Instagram, May 1, 2015, with the caption, "I was inspired by @amyschumer's hilarious #onedirection parody to do my best #nomakeup #bluesteel this morning." ivankatrump/Instagram

Kate Upton Goes Makeup-Free Kate Upton is pictured arriving at Heathrow airport on April 28, 2015 in London, England. Getty Images

Mel B Goes Makeup-Free for Date Night Mel B leaves a date with her husband at Matsuhisa in Beverly Hills, Calif., March 16, 2015. ROLO/AKM-GSI

Drew Barrymore Goes Makeup-Free In Tokyo Drew Barrymore posted this photo to Instagram, March 15, 2014, with the caption, "Good morning Tokyo #japanesebreakfast #tokyofoodtour" @drewbarrymore/Instagram

Emma Stone Goes Makeup-Free in Malibu Emma stone is seen exiting a grocery store in Malibu, Calif., March 11, 2015. Coleman-Rayner

Demi Lovato Shares a Makeup-Free Selfie Demi Lovato posted this photo to her Instagram on March 9, 2015. @ddlovato/Instagram

Drew Barrymore Rings in 40 With a Beach Trip Drew Barrymore posted this photo on Instagram on Feb. 22, 2015, with the caption "#forty". @drewbarrymore/Instagram

Demi Lovato Shares a No-Makeup Selfie Demi Lovato is seen in a photo posted to her Instagram account on Feb. 10, 2015 with the text, "GOOD MORNING ?? a little late for the #NMM but, here ya go!!!!" ddlovato/Instagram

Jennifer Garner Goes Makeup-Free Jennifer Garner is spotted out having a morning walk in Santa Monica, Calif, Feb. 4, 2015. Boaz/FameFlynet Pictures

See Kylie Jenner Without a Stitch of Makeup Kylie Jenner posted this photo to Instagram, Jan. 11, 2015, with the caption, "you know it's gonna be a good Sunday when ya weaves out & u haven't put ur face on yet." @kyliejenner/Instagram

Jennifer Garner Still Stunning Even Makeup-Free Jennifer Garner is seen on Dec. 16, 2014 in Los Angeles, Calif. SMXRF/Star Max/Getty Images

Jenny McCarthy Relaxes at Home with Donnie Wahlberg Jenny McCarthy posted this photo to her Instagram on Dec. 14, 2014. @jennyannmccarthy/Instagram

Adam Levine's Model Wife Behati Prinsloo Goes Makeup-Free Model Behati Prinsloo is seen, Dec. 14, 2014 in Los Angeles. SMXRF/Star Max/GC Images/Getty Images

Heidi Klum Reveals a Messy Beauty Secret Heidi Klum posted this photo to Instagram on Dec. 10, 2014 with the caption, "Yuck". @heidiklum/Instagram

Julianne Moore Shows Off Her Flawless Skin Julianne Moore walks in Soho, Dec. 1, 2014, in New York. Raymond Hall/Getty Images

Gisele Bundchen Steps Out with No Makeup Gisele Bundchen covers up as she takes a walk in chilly New York City, Nov. 20, 2014. PacificCoastNews

Sharon Stone is Barefaced and Beautiful Actress Sharon Stone leaves a restaurant in Paris, France on Nov. 18, 2014. Marc Piasecki/GC Images/Getty Images

Julie Bowen Hits the Road without Makeup Julie Bowen is pictured jogging in Los Angeles on Nov. 11, 2014. Sam Sharma/PacificCoastNews

Lisa Rinna Goes Without Makeup Lisa Rinna posted this photo to Instagram on Oct. 28, 2014 with the caption, ""I woke up like this" #UNICEF #WakeUpCall" lisarinna/Instagram

Kelly Osbourne Goes Barefaced to the Gym Kelly Osbourne posted this photo to Instagram on Oct. 19, 2014 with the caption, "Someone went a little #HardCore in the gym today!!! #FeelingTheBurn." kellyosbourne/Instagram

Jennifer Lopez Shares a Make-up Free Selfie This image was posted to Jennifer Lopez's Instagram account on Oct. 14, 2014 with the caption, "Now I lay me down to sleep after a great day!! #inspired but #mamatired #sleepwiththeangels #niteniteLovers." jlow/Instagram

Katherine Heigl Goes Barefaced to Work Katherine Heigl on the set of "State Of Affairs" in Los Angeles, Oct. 13, 2014. CPR/FameFlynet

Lady Gaga Goes Makeup Free; Shows Off Nose Ring This image was posted to Lady Gaga's Instagram account on Sept. 28, 2014 with the caption, "#gagadaily Q & A going up now. Post it @emmac_94! #HausWork." ladygaga/Instagram

Katie Holmes Goes Makeup Free for a Photo Shoot Katie Holmes is seen shooting a commercial for Oil of Olay in East Village, Sept. 18, 2014, in New York. Alessio Botticelli/GC Images/Getty Images

See Heidi Klum Barefaced in Bed This image was posted to Heidi Klum's Instagram account on Sept. 17, 2014 with the caption, "Good morning NYC! Not easy getting out of bed this morning." Heidi Klum/Instagram

Rosie Huntington-Whitely is Stunning Makeup Free at the Beach Rosie Huntington-Whitely posted this photo to Instagram with the caption, "Beach Day," on Sept. 7, 2014. rosiehw/Instagram

Hilary Duff Goes Make-up Free to Run Errands Hilary Duff is seen on Aug. 24, 2014 in Los Angeles, Calif. Bauer-Griffin/GC Images/Getty Images

Elle Fanning Goes Makeup-Free to the Gym Elle Fanning heads to dance class in Los Angeles, Aug. 20, 2014. Vladimir Labissiere/Splash News

Model Rosie Huntington-Whiteley Goes Casual and Makeup-Free Model and actress Rosie Huntington-Whiteley is seen out and about in Los Angeles, Calif. on Aug. 19, 2014. Xposure/AKM-GSI

Cindy Crawford Goes Make-up Free to Run Errands Cindy Crawford walks in Beverly Hills, Calif. on August 13, 2014. Splash News

Hilary Duff Shows Off Her Natural Beauty Hilary Duff leaving a gym in Los Angeles, July 30, 2014. Splash News

Megan Fox Posts a Makeup-Free Selfie Megan Fox posted this photo on Instagram, July 4, 2014. meganfoxgreen/Instagram

Beyonce Posts a Bare-Faced Selfie Beyonce posted this on Instagram with this caption: "Hello Boston," July 1, 2014. beyonce/Instagram

Marcia Cross Goes Make-up Free Marcia Cross is pictured on June 30, 2014 in Los Angeles. Gonzalo/Bauer-Griffin/Getty Images

Demi Lovato Shows Off Her Natural Beauty Demi Lovato posted this photo on Twitter on June 17, 2014. @ddlovato/Twitter

Gwyneth Paltrow Goes Make-up Free for a Low-Key Dinner Gwyneth Paltrow, sans wedding ring, is spotted in Manhattan on June 9, 2014. Splash News

Emma Watson Shows Off Her Natural Beauty Emma Watson was spotted out chatting with an elderly man while taking a stroll in North London, UK, June 7, 2014. INFphoto.com

Courteney Cox Has a Casual Day in L.A. Courteney Cox walks outside in Los Angeles, Calif., June 5, 2014. Bauer-Griffin/GC Images/Getty Images

Lady Gaga Enjoys a Day Off Lady Gaga posted this photo to her Instagram, June 4, 2014, with the caption, "Day off sleepy girl." @ladygaga/Instagram

Drew Barrymore Goes Barefaced for Cocktail Hour Drew Barrymore posted this photo on May 29, 2014 with the caption, "There's a daisy in my drink ! And @flowerbeauty on my nails #cheers #bluehillfarm." @drewbarrymore/Instagram

Heidi Klum Still Stunning Make Up Free Heidi Klum posted this photo on Instagram with this caption: "Snack Time," May 7 ,2014. heidiklum/Instagram

Jordin Sparks Embraces Her Natural Beauty Singer and actress Jordin Sparks stops by a pharmacy after her workout routine, May 4, 2014. Phamous/AKM-GSI

Elsa Pataky Posts a Selfie With Her Newborn Son Elsa Pataky posted this photo on Instagram on April 30, 2014. Elsapatakyconfidential/Instagram

Gwyneth Paltrow Goes Make-up Free Paris Photo Director Julien Frydman and actress Gwyneth Paltrow attend Paris Photo Los Angeles at Paramount Studios on April 27, 2014 in Hollywood, Calif. David Buchan/Getty Images

Kirsten Dunst Goes Make-Up Free for a Hike Kirsten Dunst goes hiking with friends in Los Angeles, Calif., April 19, 2014. Broad Image

Tyra Banks Goes Makeup-Free Tyra Banks posted this photo on Instagram with this caption: "Happy Bunny Day," April 20, 2014. TyraBanks/Instagram

Zoe Saldana Goes Makeup-Free Zoe Saldana posted this photo of herself to Twitter, April 7, 2014. @zoesaldana/Twitter