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SILICONE QUATERNIUM-2.

Valuable / ANTISTATIC, HAIR CONDITIONING

SILICONE QUATERNIUM-2 is a specialized silicone-panthenol quaternary compound, recognized for its dual functionality in enhancing hair conditioning and providing beneficial properties to skin. It acts as an effective delivery system for provitamin B5 (Panthenol) while leveraging the film-forming, spreadability-enhancing qualities of silicones.

Summary

Antistatic Hair Conditioning Moisturizing Protective Barrier Formation Enhances Spreadability Skin Softening

Science

Mechanism of Action

This ingredient functions by improving substantivity, particularly to hair, where it delivers Panthenol (provitamin B5) for moisturization and protection. The silicone component contributes significantly to hair shine and antistatic effects. On skin, silicones typically form vapor-permeable protective films, which promote excellent product spreadability and impart a soft, non-greasy finish.

Research

Clinical Evidence

Medium confidence
Effective range N/A
Optimal

1%

Key findings

  1. 01 A 1% w/w silicone quaternary microemulsion, a category encompassing SILICONE QUATERNIUM-2, demonstrated superior hair conditioning performance, including enhanced smoothness and softness, in referee evaluations of shampoos.

Transparency

Dusting Analysis

Not commonly dusted

This ingredient is a water-soluble liquid, not a powdered substance, therefore it is not subject to dusting considerations.

The Formula

Formulation

Solubility
Water
Optimal pH 6.59 – 7.17
0 7 14

Stability

SILICONE QUATERNIUM-2 Panthenol Succinate is a clear, water-soluble liquid with a mild odor. It exhibits optimal stability and efficacy within a pH range of 6.59-7.17, as observed in shampoo formulations. Formulating with 'soft complexes' can yield multifunctional properties, whereas 'hard complexes' with incompatible surfactants may lead to instability, phase splitting, foam degradation, or compromised preservative function.

Synergies

  • Soft complex formulations (with compatible surfactants)

Conflicts

  • Hard complex formations (with incompatible surfactants)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

While SILICONE QUATERNIUM-2 has not undergone a specific CIR assessment, silicones in general are well-tolerated on the skin and are often described as non-comedogenic. Related compounds such as Silicone Quaternium-8 are considered safe for cosmetic use with a low potential for irritation and non-sensitizing properties. It is important to note that no specific SCCS or FDA review status was found for this ingredient. For acne-prone individuals, while generally non-comedogenic, silicones could theoretically trap oil and debris if they create an occlusive barrier in certain formulations.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

SILICONE QUATERNIUM-2 is a valuable bifunctional ingredient, offering superior hair conditioning and Panthenol delivery, alongside general silicone benefits for skin such as improved spreadability and a soft finish, with a low risk of irritation and comedogenicity.

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