Best For Skin Types
All, Dry, Mature
Addresses
Usage Frequency
Daily
What Is Sericin?
Sericin is a natural protein derived from silk fibroin, the structural core of silk fibres. It is typically extracted during the degumming process when raw silk is processed for textile use. In skincare and haircare formulations, sericin functions as a conditioning and smoothing agent.
The protein has film-forming properties that allow it to adhere to the surface of skin and hair, creating a protective layer that can improve texture and appearance.
How It Works
Sericin works by depositing a thin film of protein onto the skin or hair surface. This layer acts as a temporary barrier and humectant, helping to smooth the outer layers and trap moisture. The protein's amino acid composition allows it to interact with keratin and other structural proteins in the outer layers of skin, promoting a more uniform appearance.
Because the protein film is relatively light, it does not occlude the skin significantly, making it suitable for use in a range of formulations from serums to creams.
Clinical Evidence & References
Research specifically examining sericin's efficacy in skincare is limited. Most supporting evidence comes from haircare studies and historical use in textiles, where the protein has demonstrated mild conditioning and smoothing effects. A small number of cosmetic chemistry studies suggest that sericin-based formulations can improve skin softness and texture, though rigorous clinical trials in human subjects remain scarce.
The ingredient appears to be well-tolerated, with no major safety concerns identified in the cosmetic literature, but the level of evidence for specific skin benefits remains modest.
How to Use
Sericin is typically used in leave-on formulations such as serums, moisturisers, and conditioners. It works well in combination with other hydrating or conditioning agents. As a support ingredient rather than a standalone treatment, it is best incorporated into a broader skincare routine. No special application technique is required.
Safety & Precautions
Frequently Asked Questions
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