Science
Mechanism of Action
With an average molecular weight of approximately 10-50 kDa, Hydrolyzed Sodium Hyaluronate readily permeates the skin, reaching both the epidermis and dermis. It functions as a potent humectant, drawing and retaining moisture to deliver deep, long-lasting hydration. This action enhances skin plumpness, elasticity, and firmness, while concurrently strengthening the skin's natural barrier function to minimize transepidermal water loss. Beyond hydration, it exhibits soothing properties, reducing redness and inflammatory responses, and offers antioxidant benefits by neutralizing damaging free radicals. Furthermore, it supports the repair of UV-damaged cells and may stimulate the skin's intrinsic hyaluronic acid production, improving the overall absorption and retention of other beneficial active ingredients.
Research
Clinical Evidence
High confidence0.1%
Key findings
- 01 In a synergistic formulation, 0.1% Hydrolyzed Sodium Hyaluronate (10kDa) significantly enhanced skin hydration compared to a 0.3% high molecular weight hyaluronic acid alone, when combined with 0.1% 1.45MDa-HA and 0.1% 380 kDa-HA.
Transparency
Dusting Analysis
Hydrolyzed Sodium Hyaluronate demonstrates significant efficacy at concentrations as low as 0.1% when synergistically combined with other hyaluronic acid forms. While higher concentrations up to 1% are observed in commercial products and up to 5% is deemed safe, its effectiveness at precise lower percentages indicates it is not typically 'dusted' merely for label claims without demonstrable benefit.
The Formula
Formulation
Stability
This ingredient is highly soluble in water and maintains optimal stability within a pH range of 5.5 to 7.5. It is susceptible to molecular chain degradation under conditions of high temperature, light exposure, and extreme acidic or alkaline environments. Due to a heightened risk of microbial contamination once dissolved, stringent sanitary precautions are imperative during formulation; a preservative system, such as phenoxyethanol with ethylhexylglycerin, is highly recommended. Pre-dissolving is advised to prevent lump formation. Note: Ultra-low molecular weight HA (<50kDa) carries some controversy, with studies suggesting potential pro-inflammatory responses in certain in vitro models, contrasted by other research indicating downregulation of UV-B induced inflammation.
Synergies
- Other forms of Hyaluronic Acid (e.g., high molecular weight, medium molecular weight HA) for multi-depth hydration
Safety
Safety Profile
The Expert Panel for Cosmetic Ingredient Safety (CIR) affirms its safety for topical cosmetic use at current concentrations and practices. Hydrolyzed Sodium Hyaluronate was included on the 2022 US FDA VCRP Priority List due to its high frequency of use. No specific SCCS opinion was identified in the available data.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydrolyzed Sodium Hyaluronate is a valuable ingredient, offering precise deep hydration, significant anti-aging benefits, and comprehensive skin barrier support due to its optimized molecular size and broad compatibility.
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