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PHENYL PROPYL TRIMETHICONE/DIPHENYLMETHICONE.

Valuable / ANTICAKING, SKIN CONDITIONING - EMOLLIENT

A precision silicone polymer engineered to form a breathable, non-oily film on the skin, effectively minimizing moisture loss while significantly enhancing the texture and spreadability of cosmetic formulations. It also contributes to increased SPF performance and reduces the inherent stickiness of other organic ingredients.

Summary

Skin-Conditioning Agent - Emollient Anticaking Agent Occlusive Agent Texture Enhancer Spreadability Enhancer SPF Booster Tackiness Reducer

Science

Mechanism of Action

This ingredient functions by establishing an imperceptible, non-greasy, and non-tacky film on the skin's surface. This advanced barrier is highly effective in preventing transepidermal water loss, promoting sustained skin hydration and a smooth tactile sensation. Crucially, the film remains permeable to vital atmospheric gases like oxygen and nitrogen, allowing essential nutrients to pass through. In formulations, it acts as an occlusive and conditioning agent, contributing to superior texture and spreadability. It can also aid in the solubilization of UV filters, thereby boosting a product's SPF, and effectively reduces the inherent stickiness of organic components.

Research

Clinical Evidence

High confidence
Effective range 2.5–19.9%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

There is no available data to suggest this ingredient is commonly associated with dusting concerns or specific dusting thresholds.

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 10
0 7 14

Stability

This ingredient exhibits robust stability across a broad pH range, from 3 to 10. It is chemically inert and demonstrates excellent compatibility with various active ingredients, including acids, alkalis, retinol, and vitamin C. While highly soluble in 95% ethanol, it is fundamentally a water-insoluble silicone.

Synergies

  • Acids
  • Alkalis
  • Retinol
  • Vitamin C
  • UV filters (enhances dissolution and SPF boosting)

Conflicts

  • Aerosol applications (due to insufficient data regarding the safety of incidental inhalation)

Safety

Safety Profile

CIR Status
Safe as used
Max tested
24.8%
Sensitization risk Low

The CIR Expert Panel has concluded that Phenyl-substituted Methicones, which include PHENYL PROPYL TRIMETHICONE/DIPHENYLMETHICONE and Phenyl Trimethicone, are safe for use in cosmetics under current practices and concentrations. A specific limitation exists for aerosol applications due to insufficient data on incidental inhalation. Phenyl Trimethicone, a related compound, is approved by the FDA as an indirect food additive for food-contact surfaces, provided it contains no more than 2% cyclosiloxanes. Clinical testing, including repeated insult patch tests, consistently indicates a low irritancy and sensitization potential.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PHENYL PROPYL TRIMETHICONE/DIPHENYLMETHICONE is a valuable, versatile silicone, highly compatible with all skin types and various active ingredients, providing significant benefits in hydration, texture enhancement, and formulation stability.

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