Beauty Ambassador: Rachel McAdams, Actor
Makeup Must-Have: Thanks to its natural, year-round warmth, Guerlain Terracotta Bronzing Powder "flies off the shelves.
Skin Secret: To battle extreme weather from humid summers to icy winters, northern beauties use skin-balancing Elizabeth Arden Prevage Day SPF moisturizer.
Hair Essential: Urbanites in Toronto and Vancouver skip highlights in favor of one-tone blonds and reds, courtesy of Clairol Perfect 10 hair color.
MORE: Ways to Predict How Well Will You Age
Beauty Ambassador: Gianna Jun, Actor
Makeup Must-Have: For creamy, crystal-clear skin, Laura Mercier Tinted Moisturizer SPF 20 creates a porcelain-like finish.
Skin Secret: The fountain of youth? ELLE's Korean reader pick, SK-II Skin Signature cream.
Hair Essential: A few refreshing spritzes of L'Occitane Control Mist Dry & Damaged Hair give straight styles a brilliant shine.
Beauty Ambassador: Gisele Bündchen, Model
Makeup Must-Have: Red lips have caught on like a fever, especially in hot cherry shades such as M.A.C Ruby Woo.
Skin Secret: Dermatologist faves-botulinum toxin A, peels, and lasers-keep Brazilian bombshells forever young.
Hair Essential: In sultry Rio, the classic Aussie 3 Minute Miracle keeps hair frizz-free.
MORE: 17 Best Skin Tips from Top Models
Beauty Ambassador: Deepika Padukone, Actor
Makeup Must-Have: Indian women keep the focus on eyes with Guerlain Terracotta Khôl Kajal in Black Frida.
Skin Secret: Clinique Even Better Spot Corrector does double duty by lightening dark spots and evening skin tone.
Hair Essential: Long, layered cuts in Mumbai are "an unchanged trend. Dove Nutritive Oil Care Conditioner keeps split ends away.
Beauty Ambassador: Diane Kruger, Actor
Makeup Must-Have: From Berlin to Düsseldorf, precisely manicured tips are finished with Chanel nail polish in Particuliére.
Skin Secret: German gals get golden limbs with the fast-working St. Tropez Self Tan Bronzing Lotion.
Hair Essential: Many German women have fine hair, says Huber, who promises va-va-volume with John Frieda dry shampoo.
See More Beauty Favorites Here!
ALSO ON ELLE.COM: