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STEARYL DIMETHICONE PG-DIETHONIUM CHLORIDE.

Valuable / HAIR CONDITIONING

STEARYL DIMETHICONE PG-DIETHONIUM CHLORIDE is an advanced silicone polymer engineered to enhance the feel and function of both skin and hair. It acts as an effective skin conditioning agent by forming a protective, vapor-permeable film, which helps to prevent transepidermal water loss and shield the skin from external factors. This action results in improved hydration, a smoother texture, and a desirable sensory experience.

Summary

Hair Conditioning Skin Conditioning

Science

Mechanism of Action

This ingredient functions by creating a thin, occlusive yet breathable film directly on the skin's surface. This barrier effectively minimizes transepidermal water loss (TEWL), thereby locking in essential hydration, and concurrently shields the stratum corneum from environmental aggressors. Beyond its protective capabilities, the inherent silicone nature of this compound imparts a desirable sensory experience, contributing to a soft, slippery, and lustrous finish on both skin and hair.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Stearyl Dimethicone, along with related dimethicone and methicone polymers, is safe for use in cosmetic formulations, provided they are designed to be non-irritating. Due to their substantial molecular weights, these polymers are considered unlikely to be significantly absorbed into the skin. It is also important to note that Dimethicone, a foundational silicone compound, is recognized by the US FDA as a safe and effective skin protectant in over-the-counter drug products at concentrations ranging from 1-30%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

STEARYL DIMETHICONE PG-DIETHONIUM CHLORIDE is a valuable silicone derivative that delivers significant emollient and protective barrier benefits across various skin types, supported by a favorable safety profile from the CIR Expert Panel.

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