APRIL ROSS, 34, BEACH VOLLEYBALL
"I wear my hair in a high braid for every match, and Aussie Mega Gel [$3.43] is great for taming flyaways. It also helps with frizz, which is awesome for humid climates like Rio's. Aussie 3 Minute Miracle Moist conditioner [$2.97] nourishes and adds shine to my hair after I've been out on the beach in the harsh sun and wind."
HALEY ANDERSON, 24, OPEN-WATER SWIMMING
"Chlorine really bleaches your eyebrows, so I put a little lip balm on them before I get in the pool to protect them. After practice I fill in my brows with Anastasia Beverly Hills Perfect Brow Pencil [$23]. And because I need serious sun protection for longer races, I use Vertra Face Stick SPF 35 [$23]. It's super water-resistant, but it's tinted, so it evens out my skin tone."
KELLEY O'HARA, 27, SOCCER
"I apply moisturizer and Coppertone ClearlySheer Sunscreen [$9.99] every morning, practice or no practice. After being on the field, I cleanse my face with Garnier SkinActive Micellar Water [$8.99]. It's quick, easy, and gentle. Essie is my favorite brand for nail polish. At the Olympics it's fun to paint my nails patriotic colors."
MARIYA KOROLEVA, 26, SYNCHRONIZED SWIMMING
"My entire kit for competitions is Make Up for Ever. Their Aqua Cream eye shadows [$23 each], waterproof eyeliner, mascara, and foundation stay put in the water. To take it off, I use Aveeno Positively Radiant Makeup Removing Wipes [$7.99]. We use Knox cooking gelatin to keep our hair back. You mix it with water, coat your hair, and pull it into a bun. My hair always feels healthier after I use it."
NATASHA HASTINGS, 30, 400 METERS
"The track is my place of employment, so I show up with my makeup and hair done like any other professional. I set my foundation, contour, and highlight with Sweat Cosmetics Mineral Foundation powder [$42]; it's water-resistant and has SPF. My favorite lipstick is Kat Von D Everlasting Liquid Lipstick in Ayesha [$20]. I always get compliments from fans when I wear it."
SANDI MORRIS, 24, POLE VAULT
"I train in the blasting sun every day, and Benefit Hello Flawless Oxygen Wow! Liquid Foundation [$36] has SPF 25 and stays on through practice. And since I have to grip the pole, I can't get anything oily on my hands, so I use Neutrogena Dry-Touch Sunscreen [$10.49]."
