Natucain

Natucain is a German haircare brand built around a single patented active ingredient, MKMS24, marketed as a plant-derived, hormone-free treatment for hair loss and thinning hair. The brand was developed by the physician Stefanie Seyda and is operated by New Flag GmbH, a Munich-based company that owns and distributes a portfolio of haircare and beauty brands. Alongside its hair-growth serum, the range extends to serums for eyebrows and eyelashes.

The company sells primarily online through localized storefronts in Germany, the United Kingdom and the United States, and its products are distributed across the Nordic markets. No founding year for the brand is documented in its public materials; the earliest dated milestone is a clinical study of its active ingredient carried out in 2016.

Natucain is attributed to Stefanie Seyda, a physician who, according to the company, studied medicine at the University of Oxford and worked internationally as a doctor before turning to cosmetic product development [8][11]. The brand presents her as the developer of MKMS24, its core active ingredient, describing a multi-year effort to find a hormone-free way to address hair loss using natural extracts rather than synthetic compounds. Earlier in her career, before Natucain, Seyda is said to have worked on the launch of an eyelash-curling product, an early point of contact with the cosmetics market.

The operating company behind the brand is New Flag GmbH, registered in Munich. Some retailer and editorial profiles describe Natucain simply as Seyda's creation without naming the parent company; the brand's legal imprint and trade press identify New Flag GmbH as the operating entity [3][10]. Both accounts hold: Seyda is credited as the founder and developer, while New Flag is the company that owns and runs the brand. The exact year Natucain itself was established is not stated in any of the brand's published pages.

New Flag GmbH is a privately held German company founded in 2010 by Niklas Epstein and Daniel Haffa, headquartered in Munich, with operations described in trade press as exceeding $200 million in annual sales across offices in Europe and the United States [10]. The company functions as both a distributor and a brand incubator. Its portfolio includes the hair-accessory brand Invisibobble and the plastic-free haircare line Foamie, along with other brands such as Urban Alchemy, Neqi and Free Eve. Among New Flag's managing directors is Sophie Trelles-Tvede, a co-founder of Invisibobble.

Natucain positions itself at the meeting point of natural ingredients and laboratory science, summed up in its German tagline "Wenn Naturkraft und Wissenschaft zusammenkommen" — when natural power and science come together. The company says it places particular emphasis on natural, hormone-free ingredients that produce no side effects, presenting this as the central distinction from conventional hair-loss treatments. The brand describes its formula as free of silicones, sulfates and parabens, and its hair-growth active as vegan.

The brand's signature product is its hair-growth serum, built on the active ingredient MKMS24. According to Natucain, MKMS24 is obtained through stem-cell technology from three plant extracts — bamboo (Bambusa Vulgaris Leaf Extract), thyme (Thymus Vulgare Extract) and lentil (Lens Esculenta Seed Extract) [6]. The company states the ingredient works at the hair root by extending the anagen, or active growth, phase of the hair cycle and shortening the shedding phase. The formula is patent-protected, registered under patent number EP3355992 [4]. The line also includes a natural eyebrow serum and a natural lash serum, which the brand says are dermatologically tested.

Natucain's marketing centres on two headline figures: up to 90% less hair loss and up to 93% stronger hair growth, with results stated to appear within eight to twelve weeks [1]. These claims trace to a placebo-controlled study of MKMS24 conducted by GPL Deutsche Pharma Laboratorien GmbH between September and December 2016 [7]. The 12-week trial involved 30 participants split evenly between an active group and a placebo group, applying a 7% MKMS24 solution twice daily; the brand's summary reports hair-loss reductions of 38% after one month, 63% after two months and 90% after three months, with no improvement in the placebo group [7]. The product is manufactured in Germany [9].

Natucain has been profiled in beauty trade and retailer media rather than recognized through awards. Beauty Independent covered the brand in the context of its parent company's expansion in the United States, describing it as a natural hair-growth product aimed at women, sold on Amazon and planned for Target [10]. The skincare retailer dermoi has published a brand profile framing Natucain as science-driven hair growth.

Natucain is active. It operates live storefronts in several countries, sells through Amazon and other retail channels, and is distributed across the Nordic region. Its parent company, New Flag GmbH, has continued to expand, particularly in the United States, where the brand has been positioned for wider retail distribution [10].