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Moumoujus

AMINOPROPYLTRIISOPROPOXYSILANE.

Valuable CAS 94989-06-7 / NOT REPORTED

A versatile γ-functional aminosilane, this ingredient acts as a coupling agent and film-former. It creates a durable, breathable, and water-resistant network on the skin, enhancing product adhesion and smoothness.

Summary

Hair conditioning Film forming Skin conditioning

Science

Mechanism of Action

Upon contact with moisture or during drying, its isopropoxy groups hydrolyze into silanol groups. These then condense to form a cross-linked silicone-organic network, providing a resilient barrier.

Research

Clinical Evidence

Medium confidence
Effective range 0.1–1%
Optimal

N/A

Key findings

  1. 01 Momentive Performance Materials (Silsoft CLX-E Technical Data); Patent EP4082625A1.

Transparency

Dusting Analysis

Not commonly dusted

No specific data on dusting behavior is available for this ingredient.

The Formula

Formulation

Solubility
Oil
Optimal pH 4 – 6.5
0 7 14

Stability

Highly moisture-sensitive, it will hydrolyze and polymerize if exposed to water. It must be kept anhydrous until the final emulsification step and is most stable in finished formulas at a slightly acidic to neutral pH.

Conflicts

  • Water (in the oil phase)
  • Strong acids
  • Strong oxidizing agents

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
1%
Sensitization risk Low

While not individually reviewed by CIR, its close relative 3-Aminopropyltriethoxysilane is well-documented. It is considered safe as it forms a non-penetrating, high-molecular-weight polymer.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Aminopropyltriisopropoxysilane is a valuable film-former that improves product durability and skin feel by creating a resilient, water-resistant barrier.

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