Science
Mechanism of Action
PG-HYDROLYZED SILK operates through several distinct mechanisms to enhance skin health. Primarily, it acts as a powerful humectant, effectively attracting and binding moisture from the atmosphere to the stratum corneum, thereby significantly elevating skin hydration levels. Concurrently, it establishes a delicate, breathable film on the skin's surface, which serves as a protective barrier against environmental aggressors and helps to minimize transepidermal water loss. The ingredient's rich amino acid composition is believed to stimulate the skin's natural collagen production, contributing to its anti-aging properties. Furthermore, PG-HYDROLYZED SILK exhibits antioxidant capabilities, neutralizing free radicals and offering protective benefits against photoaging. It also possesses anti-inflammatory properties that can soothe irritated skin, and is thought to enhance the penetration and efficacy of other active skincare ingredients. Additionally, research suggests its potential to inhibit melanin deposition and tyrosinase activity, which can contribute to a more even and brighter skin tone.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Topical application of hydrolyzed silk protein demonstrated a notable increase in stratum corneum moisture levels, ranging from 25% to 40%, within one hour of application. These hydrating effects were observed to persist for over six hours.
- 02 In a 6-week clinical study, a product formulated with Hydrolyzed Silk yielded significant improvements across key skin metrics: 100% of participants observed enhanced skin moisture, 100% reported increased skin elasticity, and a substantial 97% experienced a visible reduction in the appearance of fine lines and wrinkles.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Hydrolyzed silk protein maintains stability across a pH range of 4.0 to 8.0. However, for certain liquid formulations, a narrower optimal pH range of 4.0-6.0 may be noted. To ensure ingredient integrity, store in tightly sealed containers, ideally refrigerated (4-8°C / 39-46°F) or at room temperature, avoiding prolonged direct sunlight exposure and temperatures exceeding 40°C (104°F).
Synergies
- Enhances penetration of other skincare ingredients
Conflicts
- Concentrated nitric acid
- Concentrated sulfuric acid
- Strong oxidizing agents
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has officially concluded that 'Hydrolyzed Silk' is safe for use in cosmetic formulations. The 'PG' component within PG-HYDROLYZED SILK refers to propylene glycol, an alcoholic component generally considered safe for most skin types. Incidences of irritation or allergic reactions are rare. The ingredient has been classified as non-irritating in both ocular irritation tests and human skin irritation/sensitization tests at concentrations up to a 20% aqueous solution.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PG-HYDROLYZED SILK is a highly valuable multi-functional ingredient, offering significant hydration, anti-aging, antioxidant protection, and skin-soothing benefits, making it suitable for all skin types within precision skincare formulations.
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References
Sources