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Moumoujus

OCTYLDODECYL STEAROYL STEARATE.

Valuable CAS 90052-75-8 / SKIN CONDITIONING - EMOLLIENT, VISCOSITY CONTROLLING

Octyldodecyl Stearoyl Stearate is a versatile ester that optimizes cosmetic formulations. It establishes a protective occlusive barrier on the skin, reducing moisture loss and imparting a smooth, soft texture, while also enhancing product spreadability and overall sensorial experience.

Summary

Emollient Skin Conditioning (Occlusive) Viscosity Controlling

Science

Mechanism of Action

This ingredient functions primarily as an occlusive skin-conditioning agent, creating a protective film on the skin's surface. This barrier effectively minimizes transepidermal water loss (TEWL), thereby promoting skin hydration and suppleness. Concurrently, it acts as an emollient, softening the skin. Its additional role as a non-aqueous viscosity-increasing agent contributes to improved formulation aesthetics, aiding spreadability and delivering a luxurious feel.

Research

Clinical Evidence

High confidence
Effective range 5–28%
Optimal

N/A

Key findings

  1. 01 Human Repeated-Insult Patch Tests (HRIPT) at concentrations of 5%, 10.4%, and 21% consistently demonstrated an absence of dermal sensitization or significant irritation in human subjects.
  2. 02 Lip balm formulations containing up to 28% showed good dermatological tolerance in use tests, further confirming safety.
  3. 03 A lipstick formulation with 7.8% concentration, applied twice daily for three weeks by 62 women, reported no adverse effects.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

The ingredient itself is reported to be pH neutral. No specific optimal pH range for stability within formulations was identified in the research data.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
28%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded in 2022 that Octyldodecyl Stearoyl Stearate is safe for use in cosmetics at concentrations up to 28% when formulated to be non-irritating, particularly for ocular applications.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Octyldodecyl Stearoyl Stearate is a valuable conditioning and textural agent, widely tolerated across all skin types, significantly enhancing product feel and skin hydration.

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