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TRIDECETH-9 PG-AMODIMETHICONE.

Valuable CAS - / HAIR CONDITIONING, SKIN CONDITIONING

This advanced modified silicone acts as a multi-functional conditioning agent for both skin and hair, forming a protective, breathable film. It is engineered to impart a smooth, silky feel while enhancing formulation stability and reducing stickiness.

Summary

Skin-conditioning Hair-conditioning Emulsifying

Science

Mechanism of Action

TRIDECETH-9 PG-AMODIMETHICONE is an aminosiloxane polymer. Its amodimethicone component features positively charged amino groups that bind substantively to the negatively charged surfaces of skin and hair. This interaction facilitates the formation of a lightweight, vapor-permeable film, which conditions, moisturizes, and provides a silky texture. The Trideceth-9 portion functions as a non-ionic emulsifier, stabilizing oil-water mixtures and aiding in dispersion, while its inherent low surface tension ensures optimal spreading.

Research

Clinical Evidence

Medium confidence
Effective range 0.5–2%
Optimal

N/A

Key findings

  1. 01 A product containing TRIDECETH-9 PG-AMODIMETHICONE (SilCare® Silicone SEA) at 0.5-2% concentrations has been shown to deliver a very smooth and silky skin feel, mitigate tackiness in diverse formulations, and improve hair brightness, color protection, wet and dry combing, and shine. It also demonstrated the ability to reduce antiperspirant whitening and enhance in vivo SPF.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

This ingredient maintains excellent pH-stability across a broad range, simplifying its integration into diverse formulations. Its low viscosity allows for easy handling and processing. It effectively diminishes stickiness in cosmetic products, especially those rich in perfume, as well as in antiperspirant and deodorant applications.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
15%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel deemed this ingredient safe for cosmetic use when formulated to be non-irritating, citing its large molecular weight as a barrier to skin absorption. While 1,4-dioxane, an ethoxylation byproduct, may be present, its levels can be effectively controlled through purification. Data is insufficient regarding safety in products that might be incidentally inhaled via airbrush devices.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A versatile and safe silicone derivative, TRIDECETH-9 PG-AMODIMETHICONE offers significant conditioning benefits for both skin and hair, enhancing texture and formulation elegance.

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