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CETYL TRIETHYLMONIUM DIMETHICONE PEG-8 SUCCINATE.

Valuable / HAIR CONDITIONING

A high-performance, water-soluble silicone polymer engineered to provide both exceptional conditioning and irritation mitigation. This multifunctional ingredient creates a breathable, protective film that anchors to skin and hair surfaces, enhancing tactile smoothness while shielding against external stressors.

Conditioning Agent Emollient Film-former Irritation-mitigator Thermal Protectant

Science

This molecule functions as a substantive cationic silicone polymer. Its positively charged triethylmonium group allows it to bond effectively to the naturally negatively charged surfaces of the skin and hair, while its silicone structure provides lubricity and emolliency. Uniquely, it complexes with anionic surfactants, significantly lowering their irritation potential without compromising cleansing efficacy.


Research

High confidence
Effective range 1–5.6%
Optimal

5%

Key findings

  1. 01 Demonstrated comparable thermal protection to professional leave-in treatments during 450°F heat exposure at a 5% concentration.
  2. 02 A 5% inclusion significantly enhanced cell viability in EpiDermal assays, proving its ability to neutralize the harshness of SLS-based surfactant systems.
  3. 03 TRI Princeton trials confirmed a substantial reduction in wet combing force and improved manageability compared to standard conditioning controls.

Transparency

Not commonly dusted
Min. effective
2%
Red flag below
0.5%

While often used at lower levels for simple conditioning, clinical benefits regarding skin irritation mitigation and thermal protection are typically validated at higher concentrations near 5%.


The Formula

Solubility
Water
Optimal pH 4 – 7
0 7 14

Stability

Supplied as a 30% aqueous solution; thermally stable up to 85°C, making it suitable for hot-process formulations.

Synergies

  • Anionic surfactants
  • Amphoteric surfactants
  • Humectants

Conflicts

  • High pH environments (above 7.0) which may reduce substantivity

Safety

CIR Status
Safe as used
Max tested
5.6%
Pregnancy
Safe
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed this as safe within the alkoxy polysiloxanes group. It is specifically noted for its ability to improve the safety profile of finished surfactant products.


Your Skin

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

Our Assessment

Valuable

An excellent multifunctional polymer for precision formulations requiring both high-performance conditioning and a superior safety profile for sensitive skin.


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