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SODIUM LAUROYL HYDROLYZED SILK.

Valuable / ANTISTATIC, HAIR CONDITIONING, SKIN CONDITIONING, SURFACTANT - CLEANSING

Sodium Lauroyl Hydrolyzed Silk is a sophisticated, water-soluble anionic surfactant derived from natural silk proteins. It delivers a dual benefit as a gentle yet effective cleanser and a powerful skin conditioner, known for its hydrating and barrier-strengthening properties. This ingredient is designed to enhance skin elasticity and softness while minimizing irritation often associated with traditional surfactants.

Summary

Cleanser/Surfactant Moisturizer/Humectant Anti-static Skin conditioning Hair conditioning

Science

Mechanism of Action

This ingredient functions primarily as a humectant on the skin, actively drawing moisture from the surrounding air and binding it to the skin, which significantly bolsters the skin's natural moisture barrier. It forms a delicate, protective film, effectively preventing transepidermal water loss and shielding the skin from environmental stressors. Additionally, it exhibits antioxidant properties, contributes to a reduction in the appearance of fine lines and wrinkles, and may facilitate the deeper penetration of other active skincare ingredients. As a surfactant, it provides superior cleansing, foaming, and emulsifying capabilities, contributing to product efficacy and user experience.

Research

Clinical Evidence

High confidence
Effective range 0.5–5%
Optimal

N/A

Key findings

  1. 01 At concentrations ranging from 0.5% to 5.0%, Sodium Lauroyl Hydrolyzed Silk has been shown to provide effective cleansing, foaming, and emulsifying properties, demonstrably reducing irritation compared to conventional surfactants.
  2. 02 Aqueous hydrolyzed silk, a key component, was rigorously classified as a non-irritant in human skin irritation tests at a concentration of 6.5%, and further confirmed as both a non-irritant and a non-sensitizer in human skin patch tests at 20%.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 7
0 7 14

Stability

Optimal pH stability is observed between 4.0 and 7.0, allowing for broad formulation versatility. Cold-process integration is advisable during manufacturing to prevent potential denaturation of the protein structure, ensuring ingredient integrity and performance.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

While the Cosmetic Ingredient Review (CIR) Expert Panel has assessed 'Hydrolyzed Silk' and deemed it safe for cosmetic use, 'SODIUM LAUROYL HYDROLYZED SILK' specifically has not been independently reviewed by the CIR. Nevertheless, its hydrolyzed silk component has been shown to be non-irritating and non-sensitizing at concentrations up to 20%, indicating a generally low risk of adverse reactions for most skin types.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Sodium Lauroyl Hydrolyzed Silk is a highly valuable multi-functional ingredient, offering effective, gentle cleansing alongside significant moisturizing and skin-conditioning benefits suitable for all skin types due to its proven low irritancy and comedogenicity.

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