Science
Mechanism of Action
This unique ingredient operates by forming a stable, three-dimensional gel-like network that acts as an elastic, protective film on the skin's surface. Its cross-linked structure allows it to absorb and retain significantly more water—up to 5 times that of traditional hyaluronic acid—and continuously release this bound moisture, leading to sustained hydration and a reduction in transepidermal water loss (TEWL). Furthermore, its modified structure provides superior resistance to enzymatic degradation by hyaluronidase, ensuring its benefits endure longer on the skin. While remaining on the surface, it also uniquely facilitates the enhanced penetration of other hydrophilic active ingredients into the epidermis and dermis, offering antioxidant protection and reinforcing the skin's natural barrier.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
Given its advanced, cross-linked architecture providing enhanced water retention (up to 5 times traditional HA) and prolonged stability against enzymatic degradation, Sodium Hyaluronate Crosspolymer-3 offers distinct advantages over standard humectants. These specialized properties, including its ability to form a continuous, elastic film and potentially boost the efficacy of other actives, position it as a strategically valuable ingredient whose inclusion at effective levels would be central to a product's performance claim, rather than merely for label decoration.
The Formula
Formulation
Stability
The ingredient's cross-linked nature confers exceptional stability, rendering it highly resistant to enzymatic degradation by hyaluronidase, surpassing the resilience of conventional hyaluronic acid. This robust stability ensures its efficacy is maintained across diverse formulations, including serums, creams, masks, and lotions. It disperses effectively in both aqueous and oil-based systems, forming a pleasant hydrogel microparticle suspension in water.
Synergies
- Enhances the penetration of other hydrophilic active ingredients.
Safety
Safety Profile
As a derivative of sodium hyaluronate, this ingredient benefits from the Cosmetic Ingredient Review (CIR) Expert Panel's assessment, which found hyaluronic acid and its salts to be safe in cosmetic applications at current usage practices and concentrations. Generally recognized as extremely gentle, non-toxic, and non-irritating, it presents a low risk of allergic reactions, making it suitable for all skin types, including sensitive skin. The highest reported concentration for sodium hyaluronate in leave-on facial products is up to 7.5%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An advanced, cross-linked hyaluronic acid derivative offering superior, long-lasting hydration and skin barrier support without deep skin penetration, while also enhancing the efficacy of other hydrophilic actives.
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