The inner beauty market is entering a new phase, one defined by evidence. For years, the nutricosmetics sector has faced somewhat of a “credibility gap,” with supplements promising glowing skin, stronger hair and nails, but facing criticism for limited proof linking intake to measurable outcomes.
With increasingly knowledgeable consumers and the advancement of R&D and scientific capability, regulators, retailers and consumers alike are asking harder questions, driving the market to a new level of sophistication. Nutraceuticals, beauty supplements and importantly, their ingredients are, at present, firmly under the spotlight, with expert commentary exploring what truly works and what doesn’t. Dermatologists, neurologists and nutrition scientists are spelling out the nuances, putting efficacy front and centre. The emerging inner and inside-out beauty market is growing rapidly – no longer niche yet not fully established. As consumers become more conscious of taking holistic approaches to beauty and wellness, the category and its ingredients, are evolving into a space where health benefits and integrated routines come together.
Inner beauty is entering its evidence era
In the words of Maïté Jeanroy, Marketing & Communication Director at Activ’Inside, in the next three to five years, nutricosmetics will “decisively move from ingredient storytelling to absorption-driven performance. The recurring critique of the nutraceutical industry – limited mechanistic and quantitative evidence linking intake to real physiological outcomes – is becoming impossible to ignore, and claims based on in vitro activity or traditional use are no longer sufficient.”
Yannick Leen, VP Sales, Health Active Solutions at Symrise, adds: “An important shift we’re seeing is the focus on science and clinically proven ingredients. Consumers are closely examining product details, expecting measurable results within set timelines rather than relying on aspirational promises. This is marking a move toward prioritising scientific evidence and performance.”
Beauty supplements – gummies, tablets, powders, and drinks – backed by science and real evidence – are coming to the forefront, either on their own or paired with cosmetic routines, skincare and haircare products for 360° effectiveness, inside and out.
Jeanroy continues: “The next phase of growth will belong to brands that can demonstrate that their ingredients have bio accessibility, bioavailability, can reach measurable concentrations, and deliver clinically proven effects in humans. The future will therefore be defined by one key question: not ‘Is it natural?’ but instead, ‘Does it reach the bloodstream and act?’
“In the UK and US, approximately half of consumers cite clinical effectiveness as a top purchasing factor, while only around 20% prioritise ‘natural/clean’ positioning. Consumers increasingly view bioavailability as a proxy for efficacy: they see a product that is absorbed as effective, and then, worth their money. Consumers want the reassurance that what they ingest actually works inside the body.”
This is seeing companies such as Activ’Inside apply the same development model to every active ingredient they create; strong scientific validation combined with demonstrated fast efficacy and advanced tools where relevant, while remaining focused on delivering clinically supported, high-quality solutions. Jeanroy also notes that the era of the “hero ingredient” is not over, but it must now be supported by metabolic mapping and human clinical data. Intelligent blends acting on complementary pathways will dominate – provided each component demonstrates true bioavailability and measurable efficacy.
This evidence-first approach is also fuelling the holistic evolution of the category, bridging beauty and health, according to David Koo Hjalmarsson, Managing Director of The Good Pill Co™. He explains the crossover into broader wellness areas: “Nutricosmetics will evolve, expanding well beyond the traditional skin, hair and nail positioning. The category is set to grow substantially, and while areas such as skin longevity, microbiome modulation, collagen optimisation, hormonal balance, and glycation management are gaining traction, the real shift lies in reframing inner beauty within these broader narratives.” He continues: “Innovation will ‘break free’ from legacy category boundaries, driven by clearly identified consumer needs that extend into metabolic health, stress resilience, sleep quality, and overall vitality.”
“Self-care is expanding into an overall lifestyle, not just focusing on dermatological concerns,” adds Symrise’s Leen. “Ingestible products are becoming increasingly incorporated into inside-out beauty routines alongside topical skincare, rather than being used alone.”
Examples are already visible across the market. Brands are positioning supplements explicitly alongside topical skincare, linking gut health and skin outcomes. Marine collagen powders are designed to slot seamlessly into daily routines and are often merchandised next to serums and creams. Other ranges target skin, gut, mood and immunity supported by dermatologist-backed positioning. Probiotic ingestibles are also being framed around digestive balance, glow and systemic wellness, often paired with complementary topical formulations.
Looking at the global landscape, Koo Hjalmarsson highlights notable variations between markets: “Regional differences are particularly evident in Northeast Asia, where consumers tend to be more technically sophisticated and highly educated about formats, packaging, ingredients, mechanisms of action, and efficacy claims. Markets such as Japan and South Korea often lead in adopting science-forward positioning and advanced functional claims.”
However, he says, this gap is expected to narrow: “Over time, we will likely see a convergence between East and West, as Western consumers become more informed and brands adopt increasingly sophisticated messaging, formats and packaging. Innovations and claim trends emerging in Northeast Asia typically spill over into Western markets within a few years – especially now with K-Beauty, and soon with K-Supplements.”
Activ’Inside’s Jeanroy adds: “Gut health has already gone mainstream in markets like China, the UK and the US. Over 80% of consumers consider gut health important, and more than half plan to prioritise it further in the next 2-3 years. For nutricosmetics, this means that ‘glow’ is no longer just cosmetic – it’s expected to come with more, like digestive comfort and microbiome support.”
Skin and more
The nutricosmetics category is evolving toward integrated, holistic solutions as consumers demand products that combine Skin + Mood, Skin + Gut and Skin + Immunity. This reflects a more integrated understanding of physiology and reinforces the need for ingredients that circulate systemically and act beyond the skin’s surface.
According to Jeanroy, ultimately, the brands that will win in this new phase are those that can confidently say: “We don’t just include active ingredients. We ensure they’re absorbed, metabolised, and clinically proven to deliver results.”
Leen adds, “Furthermore, there is a preference for multifunctional products that deliver integrated benefits such as supporting both skin and joint mobility, skin and stress management, or skin and metabolic health rather than single-function alternatives.” Adding to this, Koo Hjalmarsson says, “In short, the next wave will be defined not only by what is inside the product, but by how it is consumed and experienced, making nutricosmetics more integrated into everyday lifestyle habits.”
The Inner Beauty Zone, sponsored by KSM-66 at in-cosmetics Global, will debut a showcase of science-first innovation, where personal care meets nutricosmetics. Reflecting the rise of evidence-led development, it places R&D, formulation science and clinical validation at the heart of the beauty-from-within conversation, reinforcing science-backed formulation as a defining pillar of the category’s future.
A key feature of the zone will be the new Taste Bar, where nutricosmetic ingredients are brought to life in finished formats. Attendees will be able to sample ingredients in gummies, tablets, shakes, gels, powders and snack bars, demonstrating how clinically supported ingredients can be formulated into commercially viable, consumer-ready products. Further reinforcing its commitment to credibility, as part of the zone’s debut, in-cosmetics Global is launching a Certified Partner Program in collaboration with The Good Pill Co™.
Koo Hjalmarsson will speak in the Marketing Trends Theatre at in-cosmetics Global on Tuesday 14 April from 12:00–12:45 on ‘Inside-Out Beauty: The Science and Market Power of Nutricosmetics.’
in-cosmetics Global 2026 will take place from 14-16 April at the Paris Expo Porte de Versailles, France. For more information or to register to attend, visit the website here.
