Hydration formulation is moving past the single molecule era. For years, a moisturising claim rested on one familiar humectant working at one level of the skin, and formulators built around that assumption. The brief has changed. Consumers now expect hydration that lasts through the day rather than a pleasant sensory hit that fades within hours, and that expectation pushes development teams toward systems that act through more than one mechanism.
Natori PGA 92 answers that brief from a different starting point. It is a polyglutamic acid, an amino acid polymer produced through microbial fermentation rather than a sugar chain extracted or biosynthesised in the conventional way. That structural difference is not a marketing detail. It changes how the molecule behaves on the skin surface, how it interacts with the skin’s own moisture reserve, and where it fits inside a hydration system.
A Different Molecular Origin
Most humectants used in personal care are polysaccharides or small polyols. Natori PGA 92 is neither. It is a polymer of glutamic acid units linked through peptide bonds, produced by controlled microbial fermentation. The result is a high molecular weight, water-soluble polymer with a dense array of carboxyl groups along its backbone.
Those carboxyl groups are what drive performance. Each one is a binding site for water, and their density along the chain gives the polymer a high water-holding capacity relative to its mass. Because the material is built through fermentation rather than extraction, batch composition is controlled at the process level, which supports consistency from lot to lot and removes the supply variability that comes with agricultural or animal sourced inputs.
Surface Film Plus Internal Reserve
The distinguishing property of Natori PGA 92 is that it works on two fronts at once. On the skin surface it forms a light, breathable hydrating film that holds water in place and slows transepidermal water loss. This is the mechanism most humectants share, and Natori PGA 92 is shown to sustain that surface moisture for longer than conventional humectant benchmarks.
The second mechanism is what separates it from a simple substitution. Natori PGA 92 helps the skin retain the hyaluronic acid it already produces, supporting the endogenous water reserve rather than only adding water from outside. A formulator working with this active is therefore not choosing between topping up moisture and protecting the skin’s own reservoir. The two effects run in parallel, which is why the material behaves as a hydration system component rather than a like-for-like swap in an existing formula.
Formulation Behaviour and Compatibility
Natori PGA 92 is supplied as a water-soluble material and disperses readily in the aqueous phase, which keeps it straightforward to introduce into serums, essences, lotions, emulsions, masks and gel systems. It does not require heat activation or specialised equipment, and it can be added during the cool-down phase of an emulsion process where thermal exposure needs to be limited.
Sensory performance is a practical advantage. The polymer delivers substantivity without the heavy, tacky afterfeel that high-load humectant systems can produce, which matters in lightweight essence and serum formats where slip and rapid absorption are part of the product promise. It is also compatible with hyaluronic acid grades, glycerin, panthenol and common barrier lipids, so it can be layered into an existing hydration base to extend duration rather than replacing what already works.
Where It Fits in a Product Portfolio
The clearest application is long-wear hydration positioning: serums and essences making duration claims, moisturisers targeting dry and dehydrated skin, and overnight formats where sustained moisture through a full sleep cycle is the point of the product. Because the active supports the skin’s own hyaluronic acid, it also fits naturally into barrier repair and skin resilience narratives, where the story is about restoring the skin’s capacity rather than substituting for it.
Its fermentation origin opens a second positioning route. Formulators building biotechnology-led or clean-sourced ranges gain a hydration active with a transparent production story and no animal or agricultural input, which supports vegan and sustainability claims without a performance trade-off. Post-procedure and sensitive skin lines are a further fit, since a hydrating film that reduces water loss is valuable where the barrier is temporarily compromised.
Why Choose Natori PGA 92 from Ecoori?
Ecoori supplies Natori PGA 92 with full technical documentation, formulation guidance, stability data, and regulatory support. Connect with the Ecoori team to receive technical data sheets, request samples, or explore formulation consultation.
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