Hydration is no longer seen as merely a cosmetic concern; it is increasingly recognized as fundamental to overall well-being and cellular balance. As hydration expectations evolve beyond surface-level moisturization, Laboratoires Expanscience introduces Osmolya [1], a next-generation cosmetic active designed to act at the heart of cellular water balance. This bio-inspired ingredient leverages cellular osmoregulation to deliver both immediate and long-term hydration benefits for skin and hair.

A bio-inspired ingredient rooted in plant resilience

Osmolya is derived from Iresine weberbaueri, a plant native to Peru where it is known as flora blanca (white flower) that thrives in harsh, arid environments. Its natural ability to withstand dehydration is linked to its high concentration of betaine, an organic osmolyte that regulates water balance within cells.

Expanscience has translated this mechanism into a hydrosoluble extract, obtained via an eco-designed process. Rich in betaine (≥13%) and polyphenols (≥6%), the new ingredient meets Cosmos and Natrue standards, aligning with the personal care industry’s growing demand for certified, sustainable actives.

Targeting cellular osmoregulation

According to Expanscience, Osmolya responds to a key challenge in modern skincare: osmotic stress. Environmental aggressors such as UV exposure, pollution and temperature fluctuations disrupt the equilibrium of water within skin cells, leading to dehydration, inflammation and barrier impairment.

The innovation works by enhancing the skin’s natural osmoregulatory mechanisms. In vitro studies show a +41% increase in NFAT5 expression, a transcription factor essential for cellular adaptation to osmotic stress. At the same time, Osmolya stimulates the production of osmolyte transporters (TAUT, SMIT, BGT-1) [2], improving the uptake and retention of water-regulating molecules inside cells.

This approach reflects a broader shift toward cellular-level skincare, where performance is driven by biological pathways.

Reinforcing the skin barrier and reducing stress markers

Beyond cellular hydration, Osmolya demonstrates a strong impact on skin barrier integrity. The new active upregulates key structural proteins and markers involved in barrier function, with ex vivo studies showing up to 95% protection of barrier integrity under dehydration stress conditions.

Osmolya also addresses secondary effects of osmotic stress. Thanks to its polyphenol content, it exhibits significant anti-inflammatory and antioxidant properties.

Clinically proven hydration performance

Clinical data support the biological findings. In a short-term study, a single application of a formulation containing Osmolya (2% and 3%) delivered a visible hydration boost of up to +15% within one hour.

In a multi-ethnic panel of women with dry skin, a 2% Osmoya formulation delivered measurable hydration within one hour of application, with effects maintained over the following days. Both clinical evaluations and participant feedback confirmed visible reductions in dryness, flaking, and roughness.

Expanscience further reports a significant increase in stratum corneum thickness versus placebo, highlighting Osmoya’s role in reinforcing the skin barrier.

Longer-term results confirm sustained performance. After 28 days of twice-daily use of a 2% Osmolya formulation, skin hydration increased by up to +40% compared to baseline, with statistically significant superiority over placebo.

Expanding into haircare applications

Amid the rapid skinification of hair care, Expanscience Laboratories also assessed the efficacy of Osmolya on hair.

Owing to its high affinity for the hair fiber, the new ingredient promotes the delivery of betaine and polyphenols into the cortex, where they selectively bind to damaged regions.

Instrumental and imaging studies showed: improved internal hair hydration; reinforcement of thermally damaged fibers; up to 60% reduction in frizz; and enhanced curl definition.

According to Expanscience, this dual activity opens opportunities for cross-category formulations, including scalp care, hybrid products and holistic beauty routines.

Osmolya thus appears as a “multifunctional resilience booster,” supporting both hydration and overall skin and hair health.

With this new versatile solution, Expanscience addresses several key industry trends: the rise of barrier-focused skincare, the increasing demand for scientifically substantiated actives, and the shift toward sustainable, traceable sourcing.