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PEG-10 DIMETHICONE.

Valuable / HAIR CONDITIONING, SKIN CONDITIONING

PEG-10 Dimethicone is a versatile amphiphilic silicone polymer that functions as an effective emulsifier, enabling the stable blending of oil and water phases in formulations. It simultaneously provides significant skin-conditioning benefits by forming a breathable, protective barrier, enhancing hydration, and imparting a smooth, non-greasy feel.

Summary

Emollient Emulsifying Skin-conditioning Humectant Film-forming agent

Science

Mechanism of Action

This ingredient operates by forming a breathable, protective film on the skin's surface. This film allows for oxygen and nutrient exchange while shielding against environmental pollutants and bacteria. Its large molecular structure ensures minimal skin absorption. Functioning as a humectant, it helps prevent transepidermal water loss, thus supporting skin hydration. Furthermore, as an emulsifier, it plays a crucial role in stabilizing oil-in-water or water-in-oil emulsions, ensuring uniform product texture and improved spreadability, culminating in a soft, silky, non-greasy finish.

Research

Clinical Evidence

Medium confidence
Effective range 0.5–4%
Optimal

N/A

Key findings

  1. 01 Optimal usage rates in formulations are generally suggested between 0.5% and 4% to achieve desired emulsification and conditioning effects across various skincare, color cosmetic, sun care, and hair care applications.

Transparency

Dusting Analysis

Not commonly dusted

No data available in the research to suggest dusting as a concern for this ingredient.

The Formula

Formulation

Solubility
Both
Optimal pH 5.5 – 8.5
0 7 14

Stability

PEG-10 Dimethicone exhibits good stability across a neutral to mildly alkaline pH range, specifically between 5.5 and 8.5. Exposure to strong acids or strong alkalis significantly reduces its stability, potentially leading to hydrolysis; for example, a related dimethicone experienced 20% hydrolysis within 45 days at pH 5.

Conflicts

  • Strong acids
  • Strong alkalis

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed PEG-10 Dimethicone and related dimethicone crosspolymer ingredients as safe for their intended uses in personal care products. Rigorous purification processes have effectively mitigated past concerns regarding potential 1,4-dioxane contamination.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-10 Dimethicone is a valuable multi-functional ingredient that enhances formulation stability and texture while providing broad-spectrum skin benefits, including hydration, protection, and a luxurious feel, with a strong safety profile.

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