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SODIUM STEAROYL HYDROLYZED COLLAGEN.

Valuable / ANTISTATIC, CLEANSING, HAIR CONDITIONING, SKIN CONDITIONING

A specialized derivative of hydrolyzed collagen, this ingredient functions primarily as a humectant and emollient, designed to enhance skin hydration and suppleness. It combines the benefits of collagen peptides with the conditioning properties of stearic acid.

Summary

Humectant Emollient Skin Conditioning Film Forming Antistatic Hair Conditioning

Science

Mechanism of Action

Sodium Stearoyl Hydrolyzed Collagen works by drawing and holding moisture within the skin, acting as an effective humectant to promote hydration and plumpness. Its emollient properties soften the skin and improve its overall texture. The hydrolyzed collagen component, consisting of low molecular weight peptides, may penetrate the dermis to support fibroblast activity, potentially stimulating the natural production of new collagen, elastin, and hyaluronic acid, which can enhance skin elasticity and reduce transepidermal water loss. The stearoyl fatty acid moiety contributes additional emollience, while the sodium salt form may also serve as a mild surfactant or emulsifier, assisting in cleansing and maintaining the skin's moisture barrier.

Research

Clinical Evidence

Medium confidence
Effective range 0.2–2%
Optimal

N/A

Key findings

  1. 01 Topical application rates between 0.2-2.0% for Hydrolyzed Collagen are generally effective for promoting skin softening, improved texture, and enhanced suppleness.
  2. 02 In vitro studies indicate that hydrolyzed collagens or collagen peptides at concentrations of 50-500 µg/mL can stimulate fibroblasts in human and animal tissues without exhibiting toxicity.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 6.5
0 7 14

Stability

This ingredient is highly soluble in both cold and hot water. Its optimal stability is observed within a pH range of 5.0 to 6.5. While it cannot form films independently, it can achieve this function when combined with other biopolymers and is known to mitigate the harshness of certain surfactants in formulations.

Synergies

  • Other biopolymers (for film formation)
  • Harsh surfactants (to reduce irritation)

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

Hydrolyzed Collagen, the base of this ingredient, has been deemed safe for cosmetic use by the CIR Expert Panel, showing no evidence of skin sensitivity, phototoxicity, or irritation. While specific CIR data for 'Sodium Stearoyl Hydrolyzed Collagen' is not available, its structural similarity to other fatty acyl hydrolyzed collagens (e.g., Sodium Cocoyl Hydrolyzed Collagen, which is also CIR-approved) suggests a comparable low-risk safety profile. The European Union's Cosmetics Regulation also permits its use.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Sodium Stearoyl Hydrolyzed Collagen is a valuable ingredient for comprehensive skin conditioning, offering significant hydration, emollience, and potential for supporting dermal health and barrier function across all skin types.

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