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Moumoujus

DIMETHICONE PEG-7 OCTYLDODECYL CITRATE.

Questionable CAS - / SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

This ingredient is a multifaceted silicone derivative, functioning as an emollient and skin conditioning agent. It forms a breathable barrier on the skin, enhancing hydration and providing a smooth, silky texture. Its PEG modification improves water dispersibility, while the citrate component may contribute to its emulsifying capabilities.

Summary

emollient skin conditioning emulsifier

Science

Mechanism of Action

DIMETHICONE PEG-7 OCTYLDODECYL CITRATE operates by forming a breathable, protective film on the skin's surface, characteristic of its dimethicone component. This barrier actively reduces transepidermal water loss, contributing to enhanced skin hydration and a visibly smoother, silkier feel. The PEG-7 moiety further augments moisture retention via hydrogen bonding and renders the ingredient more water-dispersible, improving formulation aesthetics. Additionally, its citrate ester structure may facilitate the stable blending of oil and water phases within cosmetic formulations.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 5.5 – 8.5
0 7 14

Stability

This ingredient exhibits solubility in both water and alcohols, indicating its water-dispersible nature due to the PEG moiety. Optimal stability for formulations incorporating this ingredient, or similar PEG-modified silicones, is observed within a pH range of 5.5 to 8.5. Formulations outside this specified pH window risk hydrolysis, and the ingredient should be protected from strong acids, strong bases, and strong oxidizers to maintain its integrity.

Conflicts

  • strong acids
  • strong bases
  • strong oxidizers

Safety

Safety Profile

CIR Status
Safe with restrictions
Pregnancy
Caution
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel generally assesses broader categories like dimethicone and PEG-dimethicones as safe for cosmetic use when non-irritating, though data is insufficient for airbrush applications due to potential inhalation. However, specific to DIMETHICONE PEG-7 OCTYLDODECYL CITRATE, California OEHHA Proposition 65 (2020 Update) lists it as a known reproductive toxicant for both males and females. This contrasts with data from The Good Scents Company, which reports no GHS classification or determined toxicity values. General dimethicone copolyols have demonstrated low skin irritancy, even at concentrations up to 40% or undiluted.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

This ingredient offers effective emollience and skin conditioning benefits, but its classification under California Proposition 65 for reproductive toxicity necessitates careful consideration and risk assessment in product formulation.

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