Science
Mechanism of Action
Silkworm Extract operates through its two main protein fractions: sericin and fibroin. Sericin, a hydrophilic protein, functions as a powerful humectant, binding water in the stratum corneum to enhance skin hydration and reduce trans-epidermal water loss. It also exhibits antioxidant properties, neutralizing free radicals and potentially inhibiting tyrosinase activity. Fibroin, a structural protein, forms a breathable, protective film on the skin's surface, reinforcing the skin barrier and contributing to a smoother texture.
Research
Clinical Evidence
Medium confidence1%
Transparency
Dusting Analysis
While some extracts are prone to 'dusting,' Silkworm Extract, particularly its hydrolyzed forms of sericin and fibroin, demonstrates clear biological activity at established concentrations. Its humectant and film-forming benefits are observable, making it a functional ingredient rather than a mere placeholder. Precision brands like Moumoujus incorporate it for its targeted efficacy.
The Formula
Formulation
Stability
Silkworm proteins are generally stable across a broad pH range (3.0-9.0), making them suitable for most cosmetic formulations. Optimal stability is typically observed between pH 4.0 and 7.0. Store in a cool, dark place to maintain integrity and prevent degradation.
Synergies
- Hyaluronic Acid (enhanced hydration)
- Glycerin (boosted humectancy)
- Niacinamide (barrier strengthening)
- Antioxidants (complementary protection)
Conflicts
- Strong acids or bases (pH outside 3.0-9.0, potential protein denaturation)
- Highly oxidizing agents (can degrade protein structure)
- Certain metal ions (may cause precipitation or reduced efficacy at high concentrations)
Safety
Safety Profile
Topical application of Silkworm Extract and its protein components (sericin, fibroin) is generally considered safe and well-tolerated, with a low risk of irritation or sensitization for most individuals. It is deemed safe for use during pregnancy and breastfeeding.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Silkworm Extract is a valuable, multifunctional ingredient that enhances skin hydration, offers antioxidant protection, and supports the skin barrier, making it suitable for a wide range of skin types and concerns.
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