Science
Mechanism of Action
This ingredient operates as a highly efficient humectant, forming a dynamic hydrated layer on the skin's surface to proficiently bind water, thereby minimizing transepidermal water loss and preserving skin elasticity. It demonstrates notable soothing capabilities, aiding in the reduction of redness and inflammation, which renders it particularly suitable for sensitive or compromised skin. Moreover, Sodium Carboxymethyl Chitin can enhance the epidermal penetration of other active ingredients, bolster the skin's natural protective barrier against environmental aggressors like pollution and harmful UV radiation, and exhibits antioxidant properties to combat free radicals. Its film-forming attributes prevent dehydration, while its capacity to modulate skin microbiota may offer advantages in managing conditions such as acne and eczema. Additionally, it is suggested to stimulate skin regeneration and promote proper collagen structure, thereby supporting wound healing processes.
Research
Clinical Evidence
Medium confidence0.01%
Transparency
Dusting Analysis
No data available to suggest dusting is a common concern or to establish dusting thresholds.
The Formula
Formulation
Stability
This ingredient maintains optimal stability within a pH range of 4.0 to 8.0. Emulsions containing related carboxymethyl chitosan derivatives exhibit enhanced stability at pH 7, with stability diminishing significantly above pH 10.
Synergies
- Can form beneficial electrostatic interactions and complexes with chitosan, potentially useful for creating sustained release systems.
Conflicts
- Electrostatic repulsion may occur with anionic chitosan derivatives, which could lead to weakened hydrogen bonds and decreased viscosity.
- Interactions with proteins such as gelatin are highly dependent on pH, the protein-to-polysaccharide ratio, and the overall biopolymer concentration.
- The presence of salts (e.g., NaCl, CaCl2) and glucose can significantly influence its interactions with other polymeric components in a formulation.
Safety
Safety Profile
Direct comprehensive safety assessments by regulatory bodies such as CIR, SCCS, or FDA for Sodium Carboxymethyl Chitin are currently not published. However, closely related compounds, carboxymethyl-chitin and carboxymethyl-chitosan, have demonstrated a Primary Irritation Index (PII) of 0.0, indicating an absence of irritation. Sodium Carboxymethyl Cellulose (CMC), another structurally analogous compound, holds a Generally Recognized As Safe (GRAS) status for various applications, though one study noted potential dose-dependent effects on lipid metabolism in zebrafish embryos.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sodium Carboxymethyl Chitin is a valuable, multi-functional ingredient offering superior hydration, significant soothing properties, and comprehensive barrier support, making it suitable for all skin types with a demonstrated low risk of irritation.
Related
Similar Ingredients
Finding similar ingredients…