For any new skincare routine, real results require consistency—but in a market flooded with hundreds of moisturizers, creams, and potions, how do you decide what's best for you? For Marlien Rentmeester,  the L.A.-based fashion editor and founder of Le Catch, the perfect face serum is a powerful multi-tasker that takes on dryness, hyperpigmentation, and fine lines in a single shot. "I'm in the sun a lot, I'm a big runner and surfer, and I'm on the beach with my kids," she says of her decision to commit to Skin Activator serum over seven weeks and candidly document the results. 

The formula's 12 potent ingredients, which include four types of hyaluronic acid, niacinamide, peptides, and prickly pear extract, met her initial criteria. So did its high efficacy levels, multi-layered delivery system, and velvety hydrating texture. "This feels like a bubble bath for my skin!" she says on Day One of her skin diary, which requires her to use the all-in-one serum exclusively morning and night.  In a perfect world, says Rentmeester, "I'd like to see more glowy, dewy, fresh-looking skin [that's] tighter, more even toned," she says. Just watch what happens next.

Check out the full Skin Diary to see Rentmeester's results come to life! 

Shop the Skin Activator serum & refill now on Westman-Atelier.com