7 Style Stars' At-Home Hair Care Tips

Mega-moisturizing essentials top Brunson's list: Shea Moisture Jamaican Black Castor Oil leave-in conditioner and pure argan oil, such as Kahina Organic 100% Argan Oil.

Margot hydrates "daily" with Davines Nounou Hair Mask and styles with Unite Texturiza finishing spray.

As a Beats By Dre ambassador and a former VJ for MTV Tr3s, Henriquez—who got her big Hollywood break as a cohost on Ryan Seacrest's radio show—now helms the mic at Dash Radio. "My day can start at 4 A.M.," says the 32-year-old, who prefers to keep her thick, frizz-prone waves sleek with regular blow-outs. "So when I'm working, I do my hair in the evenings, then I pull it up into a high bun to keep it smooth while I sleep."

SHE'S COVERED: "You have to get Drybar's shower cap," she says. "It has a special seam that doesn't let any humidity from the shower get inside."

QUICK FIX: "Sometimes if I've had a wild night, I'll wake up and half my hair is flat, the other half is kind of curly. So I mess up both sides with my hands until they have kinky waves. Luckily, I live in L.A., so it's still cool to look like a messy hipster."

PRIVATE ICONS: "Some Latina women in the media frame their face with honey-colored highlights to bring out their eyes and add dimension to their cuts," says Henriquez, who lightens her natural dark brown base. "J.Lo started it, but Sofia Vergara really mastered it. I take my cues from them."

Henriquez adds shine with Bumble and Bumble hair oil and fluffs with R+CO Death Valley Dry Shampoo.

Quann's co-wash costars: Alberto VO5 Tea Therapy Clarifying Conditioner plus a home-blended oil cocktail.

Born in London and now based in Manhattan, this fashion designer, with her coveted beachy long layers, is also a minor celebrity in Japan, where—much to her dismay—paparazzi follow her into her 14 clothing stores.

THE BRUSH-OFF: Ronson is loyal to her longtime favorite, Herbal Essences Smooth Collection shampoo and conditioner. "I'm not that patient, so I use a Wet Brush in the shower. I just brush my hair out really quickly while it's still got conditioner in it." Postshower, surf spray (Ronson even created her own a few years ago, called A Perfect Mess Beach Hair spray) is her only other essential: After blow-drying, she spritzes it on to add texture and body.

PAGING JANE BIRKIN: Colorist Tracey Cunningham adds "babylights" to Ronson's natural ash blonde. "We call Charlotte 'Bambi' in the salon," says her regular stylist, Jen Atkin, "because she's such a lady, but she also gives off a vintage, '60s boho vibe."

Herbal Essences Smooth Collection shampoo "reminds me of childhood," says Ronson, who detangles with a wet brush.

To make styles stick, Kwok uses Redken Mess Around paste and adds the "right amount of texture" with Fekkai Soleil Beach Waves spray.

The first-ever model of Indian descent to star in a Burberry ad, Neelam Gill also walked next to Kylie Jenner in Kanye West's Adidas show and scored a candid with Harry Styles on Instagram. (It's @neelamkg, if you need a new obsession.) But even though her hair gets intense heat damage at fashion shows and shoots, she keeps her long, never-been-color-treated strands supershiny with regular conditioning.

NIGHT MOVES: "My hair is so thick, so I wash it two to three times a week at night, and more often if I'm on a photo shoot where they've put in lots of product. Then I lather in conditioner and use Moroccanoil after," says Gill, who admits to going to sleep regularly with wet hair. "I know you're not supposed to, but I've been doing it my whole life."

OFF-DUTY MODEL STYLE: "On a free day, I like to use Bumble and bumble Surf Spray to make my hair a little messier." She sprays it at the roots, then pulls it through the length of her hair with her bare hands.

THANKS, MOM: "I'm very lucky because I have good genes. All of the women in my family have superlong and healthy hair, which I'm so grateful for!"

Gill's off-duty model musts include Moroccanoil Treatment oil and Bumble and Bumble Surf Spray.