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BIS-C10-28 ALKYL DIMETHICONE.

Valuable / BINDING, SKIN CONDITIONING

A sophisticated alkyl-modified silicone that bridges the gap between traditional mineral silicones and organic skin lipids. It creates a breathable, high-performance protective veil that enhances the skin's moisture retention without the heavy occlusion of standard waxes.

Skin conditioning Moisture barrier enhancement Texture modifier Binding agent

Science

By integrating long-chain alkyl groups (C10-28) onto a silicone backbone, this molecule anchors itself to the skin's lipid matrix. It forms a vapor-permeable, hydrophobic shield that prevents transepidermal water loss (TEWL) while significantly improving the glide and spreadability of topical formulations.


Research

High confidence
Effective range 1–15%
Optimal

5%

Key findings

  1. 01 Clinical assessments by the CIR (2021) demonstrate that concentrations up to 15% effectively strengthen the skin barrier via a non-absorptive, breathable film.
  2. 02 A 2003 repeated insult patch test on 83 subjects confirmed that a 5.0% concentration is both non-sensitizing and non-irritating to human skin.

Transparency

Not commonly dusted
Min. effective
1%
Red flag below
0.5%

Typically used as a structural or conditioning agent, its benefits in barrier repair and texture are usually realized at concentrations above 1%. Levels below 0.5% in barrier creams may indicate it is being used only for label claims or minor slip enhancement.


The Formula

Solubility
Oil
Optimal pH 3 – 10
0 7 14

Stability

Exhibits exceptional thermal and oxidative stability. Unlike standard dimethicone, its alkyl modification allows for superior blending with natural vegetable oils and botanical waxes.

Synergies

  • Vegetable oils
  • Natural waxes
  • Pigment dispersions

Conflicts

  • Strong oxidizing agents

Safety

CIR Status
Safe as used
Max tested
15%
Pregnancy
Safe
Sensitization risk Low

The large molecular weight of this polymer prevents skin penetration, making it toxicologically inert. It is considered safe for all leave-on applications, though caution is advised for airbrush-delivered products.


Your Skin

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

Our Assessment

Valuable

A high-performance conditioning agent that provides a superior skin-feel and breathable protection for compromised skin barriers.


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