Key Takeaways:
Real innovation in skincare is few and far between, so when Mother Science launched in 2023, both the industry and consumers paid attention. The biotech-driven skincare brand burst onto the skincare scene, touting a novel skincare ingredient called Malassezin, a naturally occurring, patented molecule derived from the yeast Malassezia furfur that acts as a potent skin-brightening antioxidant.
Unlike other biotech companies that operate on a licensing model—such as Debut with its bio-identical carmine alternative or Amyris with its plant-derived squalane—Mother Science is keeping Malassezin all to itself. Nearly three years after launching, Sephora came knocking. (The beauty retailer has a penchant for exclusivity.)
“It's not an incremental innovation on something that's already out there,” co-founder Ann Marie Simpson Einziger told BeautyMatter. “[Bio-engineered] Malassezin is absolutely new, and it's extremely gentle because it was born on our skin, so it’s really well-tolerated.”
Simpson Einziger is a beauty industry outsider, which makes her study and commercialization of Malassezin all the more unique. She spent most of her career touring the world as a renowned violinist before co-founding Mother Science with her husband, Mike Einziger, who is best known as the lead guitarist of Incubus. Outside of their musical talents, the couple also share a love of science that led to what eventually became Mother Science.
In 2017, the two Grammy Award-nominated musicians partnered with Edna Coryell, an accomplished brand builder, early on in the R&D process to bring Mother Science to life. To date, the company has raised $11.1 million, with backing from venture firm Greycroft and Katherine Power—founder of Clique Media, Versed, Merit Beauty, and Avaline—who joined the company’s board.
The brand holds 75 patents covering the use of Malassezin across major global territories, making it the first and only brand able to formulate with the molecule. On March 4, Mother Science launched on Sephora.com, followed by an in-store rollout to 140 Sephora doors on March 13, a milestone that caps a year and a half of conversations with the retailer and signals the next chapter for the nearly three-year-old company and the ingredient that made it all possible, Malassezin.
After seven years of research and eight total years of development, Mother Science conceived and delivered something truly innovative—something never seen before—not just in skincare, but also in the scientific world at large. Simpson Einziger is self-aware enough to recognize that such a claim sounds like hyperbole, especially in an industry like skincare.
“It's hard to describe Malassezin without sounding like we're making up a miracle product, but we've seen it, and we've gotten used to what it can do for people over eight years,” she said. “Telling this story to everybody else through the three products that we're launching at Sephora is something that we're really excited to do.”
From Diagnosis to Discovery
Many skincare brands are founded with the specific intention of fixing a particular skin flaw, often emerging from a founder's personal frustration. Mother Science began by seeing a flaw as a feature instead.
In 2016, Simpson Einziger was on tour in India when she developed tinea versicolor, a harmless skin condition caused by an overgrowth of yeast in the skin’s microbiome. The condition produces lighter patches on the body and, despite its appearance, poses no threat to overall health, typically resolving on its own over time. Simpson Einziger found her condition “fascinating” and soon began to wonder whether the biological mechanism occurring naturally on her skin could be harnessed to address dark spots on the face, which is an issue she personally struggled with.
Einziger, who studied science and music theory at Harvard University in the late 2000s, still had access to research papers, and together they went down a scientific literature rabbit hole into the yeast that causes tinea versicolor.
“There’s a tendency in the research literature to look at the whole skin condition of tinea versicolor as a bad thing, something to get rid of,” said Einziger. “Our perspective was more like treating it like a feature rather than a bug.”
The literature on Malassezia furfur was sparse. A single 2001 paper had identified the molecule, but it had never been characterized for cosmetic use, formulated into products, or tested on human skin. The couple wasted no time putting together a scientific team to study and characterize this molecule to better understand what it was doing on the skin.
“We were looking for a molecule that was produced in these circumstances in the skin that could potentially impact melanin production,” Einziger explained. “We were just trying to answer basic scientific questions about what could be causing the effects that you see with skin lightning in tinea versicolor, and could we leverage that into a product that would improve somebody's dark spots?”
The Long Road of R&D
What began as a curiosity-driven exploration evolved into a full-scale R&D program, typically only seen in big beauty conglomerates. In an industry where brands can be conceptualized and launched within as little as a year, Mother Science spent nearly eight years in research and development before bringing a product to market in 2023.
The team began with hundreds of cell-based assays, followed by ex vivo studies analyzing gene expression across 22,000 genes per sample over hundreds of samples. This is where the Mother Science team began to get clues that Malassezin was incredibly effective. In the brand’s first clinical trial, the main goal was to examine the effect of Malassezin on hyperpigmentation. Mother Science even went so far as to conduct punch biopsies at baseline, during use, and after discontinuation, which is rare to see in cosmetic clinical studies.
“What we saw was really incredible in that not only did we see efficacy around improving the dark spots, but also the protection of the skin tone in general, which makes [Malassezin] an incredible ingredient for all skin tones,” Coryell told BeautyMatter. “We also saw the smoothing of fine lines and wrinkles, which was unexpected, as well as improvements in texture that people noticed very quickly.”
Across seven clinical trials, Mother Science tested and evaluated Malassezin for hyperpigmentation, fine lines, texture, and barrier support. In HRIPT (human repeat insult patch test) irritation testing, the company reports zero irritation scores across all three of its products. This is especially notable given that one includes retinol, which has a reputation for causing irritation. The brand has drafted scientific papers on Malassezin in three leading dermatology journals, and the brand’s clinical research has been presented to 50,000 dermatologists at numerous dermatology conferences.
“The gene expression data that we have is incredibly rare and fuels so much of our R&D and product development,” Coryell told BeautyMatter. “It’s the type of data that large conglomerates use to come out with trending products. We’re able to live in that data and use it to inform what makes sense for the next product.”
Mother Science takes a slow and steady approach to its product pipeline. The brand launched in 2023 with one product, Molecular Hero Serum, which targets dark spots, hyperpigmentation, and sun damage, and has been a customer favorite from the start. The brand reports an average monthly repeat-purchase rate of 40%, which is nearly double the industry average.
One of the most compelling discoveries to emerge from the brand’s R&D process was Malassezin’s ability to temper the biological response to retinization, which is the temporary adjustment period marked by dryness, redness, and irritation when starting a retinoid. Recognizing the opportunity, Coryell saw immediate potential in pairing the molecule with one of skincare’s most effective, yet notoriously irritating, gold-standard ingredients: retinol.
In May 2024, Mother Science introduced Retinol Synergist, combining Malassezin with retinol to help mitigate irritation while maintaining efficacy. Six months later, the company expanded its lineup with Molecular Genesis Barrier Repair Moisturizer, formulated with Malassezin alongside growth factors, copper peptides, hyaluronic acid, and squalane to reinforce the skin barrier and deliver treatment-level hydration. All three products are powered by Malassezin, which the brand believes is on par with the industry’s best-in-class ingredients.
“We call Malassezin a landscape-changing molecule, because in beauty, there are a few ingredients that you see in every formulation, because they just have such a global benefit on the skin's health and condition,” explained Simpson Einziger. “You see things like retinol used for brightening and fine lines and wrinkles, and antioxidants used to target different signs of aging, and Malassezin is the same. It works differently than anything else out there, but it targets multiple signs of aging and also improves skin health in really novel, exciting ways.”
Technically classified as an antioxidant, Mother Science claims that Malassezin is 10 times more powerful than vitamin C in reducing free radicals, based on comparative studies conducted by the brand. Unlike vitamin C, which is notoriously unstable and often requires complex strategies to suspend the ingredient in a water-free formulation, Malassezin is inherently stable, according to the brand’s research.
“We’ve done studies looking at the reduction in free radicals by using Malassezin and then also by using vitamin C and other antioxidants,” Coryell stated, adding that the molecule maintains efficacy throughout the product’s lifespan and beyond.
“It’s more stable than most cosmetic ingredients.”
From Molecule to Market
Mother Science’s patience in the long R&D process has so far paid off. The brand has seen significant growth annually since its launch in 2023, with a 3.5x increase in 2024 and a doubling of the business last year. Despite early interest from retail partners, Mother Science intentionally delayed entering brick-and-mortar.
“We really valued being direct-to-consumer (DTC) and having that direct connection with our consumer,” said Coryell. “We wanted to understand what they were resonating with from a product perspective and what results they were seeing.”
According to Simpson Einziger, Mother Science had Sephora “on the vision board from the very beginning,” but the brand intentionally held off until it had found its footing in DTC, built meaningful traction, and generated organic momentum among creators and press. Conversations with the LVMH-owned retailer began roughly a year and a half ago. For Simpson Einziger, it was critical to first understand Sephora’s long-term vision for clinical skincare and ensure alignment before officially hopping on board.
“Sephora is thrilled to partner with Mother Science and introduce its line of next-generation clinical skincare products,” Brooke Banwart, Senior Vice President of Skincare Merchandising at Sephora, said in a statement to BeautyMatter. “We know our clients value innovative brands with intentional formulation, and Mother Science delivers on that through a science-first approach and focus on highly efficacious ingredients, including Malassezin, clinically proven to brighten the skin and deliver visible results. We look forward to welcoming this results-driven brand to our Sephora community and know it will be a great addition to our growing skincare assortment.”
For Sephora, the appeal lies in exclusivity and differentiation. Malassezin is patented and exclusive to Mother Science, offering the retailer something its competitors cannot stock.
“Our unfair advantage is that we have rigorous clinical research and scientific data around a novel, transformative ingredient,” said Simpson Einziger. “Having the privilege of introducing this molecule to the retail consumer is something Sephora was excited about, and we are absolutely thrilled to partner with them to reach this larger audience and educate them on both our brand and Malassezin.”
“Sephora is the place where consumers are going to find the next breakthrough in skincare, so we felt very aligned with that vision from the beginning,” added Coryell.
Pioneering a novel ingredient is only half the battle. Educating skincare-savvy consumers about Malassezin and earning their trust enough to get them to try it for themselves is a challenge that Mother Science has faced since day one, and continues to face today as the brand lands in retail for the first time. Coryell likened the process to “peeling back the layers of an onion,” where the early stages of consumer education were very surface level.
“When we first launched, we were starting from square one and having to teach people how to say the word Malassezin,” she recalled. “Now that we've been in the market for a few years, Malassezin has become known for certain benefits and results.”
Today, Mother Science can go deeper and talk more about the science of Malassezin, now that consumers are at least a little more familiar with the ingredient.
“We can have a little bit more sophistication in the way that we reach our audience, but there are still layers to the education process,” added Simpson Einziger. It’s a hard, but not impossible, challenge that the brand is ready to take on.
"I look at niacinamide—a five-syllable chemical that everybody knows—or hyaluronic acid, which sounds dangerous, but everybody knows that it's great for your skin,” Simpson Einziger said. “It’s been done before, and it's a really heavy lift, but it's our biggest privilege to bring something new to the market like this.”
Mother Science sees Malassezin as a long-term innovation engine that improves outcomes across multiple use cases and scenarios, including, potentially, bodycare in the future. But Simpson Einziger also hinted at the future of Mother Science beyond just Malassezin.
“We started as anR&D company, and we want to be known as the company that brings new ingredients to market,” said Simpson Einziger. “We want to be known for intentionally innovating in the skincare space.”
For Einziger, the process of scientific research and development is rewarding in itself. Mother Science goes where the science takes it, which is part of the fun.
“Each new discovery is like a present that we get to unwrap, and when we see what's in there, it makes us wonder how we can use it to best serve our customers,” he said.
Simpson Einziger agreed, adding that she enters into a kind of “flow state” that feels innately human when she’s deep in scientific research and discovery.
“In this world of AI technology and machines telling you what to do next, there's something just amazing about having questions, doing experiments, and then seeing where that leads you,” she said. “It's really rewarding, and it's transformative work. We're really privileged to be a part of it.”