Science
Mechanism of Action
Dimethicone functions by creating a non-occlusive yet protective film on the skin. This film acts as a physical barrier, significantly reducing transepidermal water loss (TEWL) and thereby enhancing skin hydration. It also safeguards the skin from environmental irritants. Its unique molecular structure contributes to a smooth, non-tacky feel, improving spreadability and providing a temporary cosmetic smoothing effect by filling fine lines and pores. Due to its large molecular weight, dimethicone remains on the skin's surface and does not penetrate deeper or exert a biological mechanism of action.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 Approved by the FDA as an OTC skin protectant for maintaining skin hydration and limiting the formation of hypertrophic scars and keloids.
- 02 Highly effective in leave-on formulations such as moisturizers and serums for promoting hydration and softness.
- 03 Used in specialized scar treatment products to keep skin hydrated and mitigate hypertrophic scars and keloids.
- 04 Functions as a formulation aid, enhancing product texture and stability.
Transparency
Dusting Analysis
Information regarding 'dusting' properties for Dimethicone is not available in the provided research data.
The Formula
Formulation
Stability
Dimethicone exhibits excellent stability, requiring no additional preservatives. It is inert and does not react with other ingredients, air, or light. It can be incorporated into the oil phase of formulations and is compatible with both hot and cold processing methods.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed dimethicone's safety in current uses and concentrations, provided formulations are non-irritating. The FDA classifies dimethicone as a Category 1 active ingredient (safe and effective) for skin protection up to 30% in all age groups, with specific warnings against application over open wounds. It is also proposed as Category 1 for diaper rash prevention and treatment. Dimethicone demonstrates low skin absorption and no evidence of toxicity in animal studies, being generally regarded as non-toxic, non-irritating, and non-allergenic.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Dimethicone is a valuable, highly stable, and safe ingredient that provides essential skin protection, hydration, and textural enhancement across a wide range of skincare formulations and skin types.
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