Science
Mechanism of Action
Isostearoyl Hydrolyzed Silk is created by breaking down natural silk proteins into smaller, highly bioavailable peptides and amino acids like glycine, alanine, and serine. These amino acids penetrate the skin's outer layers, acting as vital building blocks that support the synthesis of collagen and elastin, key proteins for skin firmness and flexibility. It functions as a potent humectant, drawing and retaining moisture to plump skin cells and diminish the visibility of fine lines. Furthermore, its film-forming capabilities establish a protective barrier, reducing transepidermal water loss and offering defense against environmental aggressors. The ingredient also contributes to a fortified skin barrier, reducing redness and inflammation, and may offer antioxidant benefits by neutralizing free radicals, all while potentially improving the absorption of other active ingredients.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
As an oil-soluble derivative, Isostearoyl Hydrolyzed Silk integrates effectively into anhydrous formulations, such as specific facial or hair oils. While optimal pH ranges of 4.0-5.5 or 6-7 are noted for Hydrolyzed Silk in water, this specific oil-soluble form demonstrates good overall stability and compatibility across various cosmetic matrices.
Synergies
- Enhances the penetration of other active ingredients
Safety
Safety Profile
The CIR Expert Panel has deemed Hydrolyzed Silk and related silk proteins safe for cosmetic use, concluding that concentrations up to 20% are non-irritating and non-sensitizing in human skin tests. Although Isostearoyl Hydrolyzed Silk was not explicitly listed, the safety assessment for the broader class of hydrolyzed silk ingredients applies. It is not restricted under EU cosmetic regulations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Isostearoyl Hydrolyzed Silk is a valuable, well-tolerated ingredient offering significant benefits in skin hydration, barrier reinforcement, and age-defying support, making it suitable for a wide range of formulations and skin types.
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