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PEG/PPG-16/8 DIMETHICONE.

Valuable / ANTIFOAMING, SKIN CONDITIONING, SURFACTANT - EMULSIFYING

PEG/PPG-16/8 Dimethicone is a hydrophilic silicone derivative recognized for its multifaceted role in skincare formulations. It functions as a skin-conditioning agent, enhancing feel and providing emollient properties, while also acting as a humectant to support skin hydration. Its emulsifying capabilities further ensure stable and well-blended product consistency.

Summary

Antifoaming agent Skin-conditioning agent Emollient Slip modifier Surfactant (emulsifying agent) Humectant Plasticizer Lubricant Emulsion stabilizer Cleansing agent Anti-caking agent

Science

Mechanism of Action

On the skin, PEG/PPG-16/8 Dimethicone primarily functions as a conditioning agent, creating a smooth, non-tacky feel and enhancing the skin's surface texture. Its humectant properties help attract and retain moisture, contributing to skin hydration. The ingredient can also act as a mild cleansing agent, assisting in the removal of impurities, and as a slip modifier to improve the sensorial application of formulations.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Evaluated as a non-primary skin irritant at 40% concentration in aqueous solution (for Dimethicone Copolyol, a broader class).
  2. 02 Demonstrated as a non-primary skin irritant when applied undiluted (for Dimethicone Copolyol).
  3. 03 Found to be non-irritating and non-sensitizing in a study involving 201 volunteers (for Dimethicone Copolyol).

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

As an alkoxy polysiloxane with a PEG moiety, this ingredient is generally stable and exhibits good solubility in both water and alcohols, making it versatile for various aqueous formulations.

Conflicts

  • Formulators should exercise caution when combining with ingredients whose dermal absorption is a concern, as PEG esters, including this ingredient, possess the capacity to enhance the penetration of other substances into the skin.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
10%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has repeatedly affirmed the safety of Dimethicone Copolyol, the broader category encompassing PEG/PPG-16/8 Dimethicone, concluding it is safe for cosmetic use. This safety assessment, reaffirmed in 2005 and 2014, indicated its use in concentrations up to 10% without significant irritancy or sensitization, even in undiluted forms. The FDA monitors ingredient use via its Voluntary Cosmetic Registration Program (VCRP).

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG/PPG-16/8 Dimethicone is a valuable, low-risk ingredient that enhances product aesthetics and performance while offering skin conditioning and hydration benefits.

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References

Sources