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Moumoujus

ISOCETYL STEARATE.

Questionable CAS 25339-09-7 / SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

Isocetyl Stearate is a multifunctional alkyl ester that acts primarily as an emollient, delivering significant skin conditioning and hydration benefits. It forms a protective barrier to reduce moisture loss, contributing to a soft and smooth skin feel. Additionally, it serves as a solvent, enhancing ingredient dispersion in formulations.

Summary

Emollient Skin Conditioning Lubricant Solvent Pigment Dispersant Smoothing Skin Protecting

Science

Mechanism of Action

Upon application, Isocetyl Stearate establishes an occlusive film on the skin's surface, which effectively minimizes transepidermal water loss (TEWL) and maintains optimal hydration levels. Its lubricating properties impart a smooth, non-greasy texture. Furthermore, it possesses solvent capabilities, facilitating the dissolution of other substances and ensuring uniform pigment distribution within cosmetic matrices.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Isocetyl Stearate demonstrates robust stability and excellent compatibility with a wide array of formulation components, including various oils, waxes, and silicones. Its low viscosity and oil-soluble nature ensure seamless integration into diverse cosmetic systems.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The CIR Expert Panel affirms Isocetyl Stearate's safety in current cosmetic applications when formulated to be non-irritating. However, its high comedogenic potential (as indicated by INCIDecoder) warrants careful consideration, particularly for acne-prone individuals. Patch testing is recommended for those with sensitive skin or known allergies to fatty alcohols or acids.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
No Oily
No Sensitive
Irritancy Low
Comedogenicity High

Our Assessment

Verdict

Questionable

While Isocetyl Stearate offers effective emollient and conditioning properties, its notably high comedogenicity may pose a significant concern for breakout-prone skin types, making its general utility questionable for precision skincare applications.

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