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Moumoujus

ISOPROPYL STEARATE.

Valuable CAS 112-10-7 / BINDING, SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

Isopropyl Stearate is a lightweight ester functioning primarily as an emollient and skin-conditioning agent. It enhances the skin's surface texture, imparting a smooth feel and improving moisturization by forming a protective film to reduce transepidermal water loss. This versatile ingredient is commonly found across a broad spectrum of skincare and cosmetic formulations.

Summary

Binding Emollient Skin conditioning Moisturizer Lubricant

Science

Mechanism of Action

This ingredient operates as a surface lubricant, enhancing the skin's texture for a soft and smooth feel. Its primary action involves forming a fine, occlusive film on the skin, which effectively diminishes water evaporation and boosts hydration levels, thereby acting as an emollient and moisturizer.

Research

Clinical Evidence

Medium confidence
Effective range 0.1–50%
Optimal

N/A

Key findings

  1. 01 A CIR Safety Review indicated that stearate esters, including Isopropyl Stearate, when used at cosmetic concentrations ranging from 0.1% to 50.0%, were found to be minimally to mildly irritating, non-sensitizing, non-phototoxic, and non-photosensitizing. This broad concentration range supports its safe application for its intended conditioning functions.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Isopropyl Stearate exhibits stability under recommended storage conditions, which include maintaining a cool, dry environment with the container tightly closed and away from any ignition sources.

Conflicts

  • Strong oxidizing agents

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The CIR Expert Panel has deemed Isopropyl Stearate safe under current usage practices and concentrations, provided formulations are non-irritating. A key consideration for formulators, as highlighted by the CIR, is its potential for comedogenicity. It has been documented as a skin irritant when applied undiluted.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Isopropyl Stearate is a valuable ester for formulations requiring skin softening and conditioning, offering effective moisturization and texture improvement with a generally low risk of irritation at cosmetic concentrations, though comedogenicity should be considered.

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References

Sources