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C26-28 ALKYL METHICONE.

Valuable / SKIN CONDITIONING

A high-performance silicone wax that bridges the gap between traditional silicones and natural waxes, providing a structured yet breathable barrier. It enhances the sensory profile of skincare by reducing the stickiness typically associated with heavy oils while delivering a sophisticated, silky finish.

Emollient Occlusive Film Former Viscosity Controller Texture Enhancer

Science

It functions as a vapor-permeable occlusive, creating a protective film that significantly curbs transepidermal water loss (TEWL) without suffocating the skin. Additionally, it acts as a rheology modifier, improving the spreadability of formulations and increasing the wear-time of active ingredients on the skin surface.


Research

High confidence
Effective range 1–15%
Optimal

15%

Key findings

  1. 01 A 2021 CIR safety assessment confirmed that concentrations up to 15% are effective for skin conditioning and are not dermally absorbed due to their high molecular weight.
  2. 02 OECD TG 404 tests demonstrated that even at 100% concentration, the ingredient remains non-irritating, validating its safety in concentrated anhydrous products.

Transparency

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

While often used at lower levels for texture enhancement, concentrations below 1% may not provide the significant barrier repair and occlusive benefits noted in clinical evaluations.


The Formula

Solubility
Oil
Optimal pH 4 – 9
0 7 14

Stability

A chemically inert silicone wax with a melting point of 66-72°C. It must be integrated into the oil phase and fully melted to ensure a homogenous emulsion.

Synergies

  • Heavy botanical waxes
  • Mineral UV filters
  • Volatile silicones

Conflicts

  • High-viscosity aqueous systems without emulsification
  • Incompatible with formulas prone to recrystallization without proper solvency

Safety

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

Safe for topical applications; however, it is not recommended for airbrush or aerosol delivery systems due to potential inhalation risks associated with small particles.


Your Skin

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

Our Assessment

Valuable

An exceptional texture-refining agent and barrier protector that provides long-lasting hydration with a non-greasy, elegant skin feel.


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References