Science
Mechanism of Action
This hydrolyzed polysaccharide works by forming a protective layer on the skin's surface, which helps to shield it from external aggressors. Additionally, its molecular structure allows it to attract and bind water, effectively functioning as a humectant. This action boosts the skin's capacity to retain moisture, contributing to improved hydration and a smoother skin texture.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Hydrolyzed Agar exhibits optimal stability and functionality within a pH range of 5.0 to 9.0. It is crucial to avoid highly acidic environments below pH 4.0, as these conditions can trigger further hydrolysis and degradation of the polysaccharide, compromising its structural integrity and intended efficacy in formulations.
Conflicts
- Strong acidic systems (below pH 4.0) can induce degradation and further hydrolysis of the polysaccharide structure.
- While primarily relevant for its parent ingredient, agar, it is prudent to note potential interactions: tannic acid can inhibit gelling, and gum karaya may reduce gel strength. Proton scavengers such as potassium iodide, urea, guanidine, and sodium thiocyanate can block agarose gel formation. Although hydrolyzed agar has diminished gelling properties, these interactions warrant consideration in complex cosmetic formulations.
Safety
Safety Profile
The CIR Expert Panel has concluded that 'Agar' (the non-hydrolyzed form) is safe for use in cosmetics under current practices. While specific maximum concentration limits for 'Hydrolyzed Agar' by CIR or SCCS were not identified, the broader category of 'Saccharide Hydrolysate,' which includes hydrolyzed agar, holds a Generally Recognized As Safe (GRAS) affirmation by the US FDA for direct food substances, with no specified limitations beyond good manufacturing practices. Overall, it presents a low risk of sensitization.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydrolyzed Agar is a valuable and low-risk ingredient offering significant skin protection, humectant-driven hydration, and beneficial viscosity control across all skin types.
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References
Sources