“Being a twin feels like a superpower,” says Marlien Rentmeester, the 51-year-old founder of the fashion blog Le Catch, who shares more than a beautiful olive-toned complexion and incredible style with her identical twin sister, Coliena (their impossibly flawless skin and way with tiered maxidresses, filmy skirts, and sleek evening gowns also qualify as superpowers). “When Coco and I are in New York, we’re going running along the Hudson or having dinner somewhere downtown, like Bar Pitti. When we’re in LA, we’re jumping into the ocean in Malibu, or we’re at my house and she’s stealing clothes from my closet.” The sisters, both mothers to two teenagers, also steal/share each other’s skin care and makeup—goop, Beautycounter, and RMS are favorites.

1. Marlien’s I’m-Not-Tired Trick

   

   goop Beauty
   GOOPGLOW Microderm
   Instant Glow Exfoliator
   goop, $125/$112 with subscription

   SHOP NOW

2. Coliena’s Eye-Brightening Secret

   

   RMS Beauty
   “Un” Cover-Up
   goop, $36

   SHOP NOW

3. Their Inky Mascara Obsession

   

   Beautycounter
   Think Big
   All-in-One Mascara
   goop, $30

   SHOP NOW

“Being a mom has aged me, so I need more under-eye concealer these days,” laughs fashion photographer Coliena, who calls both LA and Tribeca home. The twins’ easy beauty routines, outdoorsy lifestyles, and spirit-nourishing work (they also run Oui Want together, a platform where they curate and style some of the most beautiful new and loved brands—if you’re on the prowl for something swishy, flattering, and whimsical, check it out) all play into their noticeable glow. So do genetics: “Our dad is Dutch, with olive skin, and our mom is Indonesian. She’s 86 years old but could pass for 65,” says Marlien. “Probably because she doesn’t go in the sun.”

The sisters do go in the sun, however. “We have the same skin type: dry and neglected,” deadpans Marlien. “We’re in the sun all the time—surfing, waterskiing, running. We used to be delinquents about skin care, but now when I look at Coco and see wrinkles, I’m like, Okay, I’ve gotta start doing more. Looking at each other is incentive.” Here, their joint (and clearly extremely effective) strategy.

1. “I worked with Jean Godfrey-June at Lucky magazine a million years ago when I was a fashion editor, and she was like, ‘Exfoliate—just do that!’” says Marlien. “It’s true; it makes the biggest difference. I use Microderm a few times a week, and the Sleep Milk serum is my new savior. It’s got alpha hydroxy acids and moisturizing extracts. You apply it before bed, and it works overnight—it’s like GP knew exactly what my skin needed and made it.”

2. 

   goop Beauty
   GOOPGLOW Dark Spot Exfoliating Sleep Milk
   goop, $98/$89 with subscription

   SHOP NOW

Both Rentmeesters go for silky formulas that take no skill—or time—to smooth on for a subtle, healthy-looking sheen. “I do a little tinted moisturizer from Beautycounter or Iris&Romeo concealer, plus Beautycounter cheek tint and lip gloss,” says Coliena.

1. 

   Beautycounter
   Dew Skin Tinted Moisturizer
   goop, $50

   SHOP NOW

2. 

   Beautycounter
   Beyond Gloss
   goop, $32

   SHOP NOW

1. Marlien’s everyday approach is similarly effortless. “I almost always have goop lip balm with me, and I fill in my brows with brow gel for definition and a sculpting effect. For special occasions, I dab a little RMS highlighter along my brow bone and cheeks.”

   

   goop Beauty
   GOOPGENES Clean Nourishing Lip Balm Trio
   goop, $48

   SHOP NOW

2. 

   RMS Beauty
   Living Luminizer
   goop, $38

   SHOP NOW

1. goop Pick

   

   Rye Beauty
   Brow Grooming Serum
   goop, $42

   SHOP NOW

1. Coliena wakes up her dry skin with the surge of peptides and brightening bakuchiol in the Beautycounter moisturizer. “The texture feels suuuper light,” she says.

   

   Beautycounter
   Countertime Tetrapeptide Supreme Cream
   goop, $98

   SHOP NOW

2. goop Pick

   

   Tamara Dutta
   Rosehip Smoothie Balm
   goop, $150

   SHOP NOW

Marlien follows three steps for intense hydration: “Layer the goop face oil, which I love, under a rich balm, like the one from Oak Essentials—it’s like buttering a bagel, but for your face,” she says. “And then I love goop eye cream: ‘Ooooh, let’s put this on.’”

1. 

   goop Beauty
   GOOPGENES All-in-One
   Super Nutrient Face Oil
   goop, $98

   SHOP NOW

2. 

   goop Beauty
   GOOPGENES All-in-One
   Nourishing Eye Cream
   goop, $55/$50 with subscription

   SHOP NOW

A smooth thigh or strong, sun-kissed arms are almost always on display in whatever swishy, casually sleek getup the sisters are wearing. “I just glob the goop body butter all over me,” says Coliena, who’s currently loving pieces from Maison Mayle (Marlien, on the other hand, has lately been into La Ligne and MOTHER denim). “My skin is so dry, and I love the idea of covering myself in something clean.”

1. 

   goop Beauty
   GOOPGENES Nourishing Repair Body Butter
   goop, $65/$50 with subscription

   SHOP NOW

2. 

   goop Beauty
   GOOPGLOW Microderm Instant Glow Body Polish
   goop, $48/$43 with subscription

   SHOP NOW

3. 

   G. Label
   Tanya Tile-Print Minidress
   goop, $565

   SHOP NOW

“We grew up in New York and still have that relaxed sensibility,” says Marlien. “We just wear our hair up so that no one can see what’s going on.”

“The default is a quick bun,” agrees Coliena. “I work out every morning, and I’m just so sweaty, I wash my hair every day.”

goop Picks

1. 

   Aquis
   Flip Hair Drying Tool
   goop, $50

   SHOP NOW

2. 

   Slip
   Silk Scrunchies – Small
   goop, $39

   SHOP NOW

3. 

   Manta
   Manta Pink Hairbrush
   goop, $30

   SHOP NOW