C24-28 Alkyl Methicone

What is C24-28 Alkyl Methicone?

C24-28 Alkyl Methicone is a synthetic silicone polymer featuring methicone backbones grafted with long-chain alkyl groups from 24 to 28 carbons. Produced through hydrosilylation of siloxanes with alpha-olefins, it belongs to the alkyl siloxane family used in cosmetics for its unique sensory profile. In formulations like creams, serums, and foundations, it acts as an emollient by creating a thin, breathable film that enhances product glide and imparts a velvety, non-oily finish. Its extended alkyl chains provide superior compatibility with organic oils, boosting spreadability while minimizing tackiness. As a viscosity controller, it stabilizes emulsions and adjusts flow for even application. The skin conditioning aspect supports surface suppleness by temporarily filling micro-roughness, making it popular in products targeting a refined texture.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Emollient
Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.
Viscosity controlling agent
Adjusts thickness to the desired level for stability and usability, improving dispensing, suspension, and texture across many formulation types.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Delivers a lightweight, silky texture that improves skin feel and product application.

Enhances formulation stability by controlling thickness without adding oiliness.

Supports skin suppleness and smoothness through gentle surface conditioning.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
People with normal to dry skin wanting a non-greasy smooth feel.
People with rare silicone sensitivities.
Individuals seeking better product spread in lotions or makeup.
Individuals avoiding silicones based on personal preferences.
Those preferring matte-finish emollients in daily skincare.
Users preferring fully natural, silicone-free formulations.

Safety Notes

  • Rated low hazard by EWG, indicating broad safety in cosmetics.
  • Non-comedogenic with no evidence of pore-clogging from reviews.

Frequently Asked Questions about C24-28 Alkyl Methicone

What does C24-28 Alkyl Methicone do in skincare?

It softens skin, improves product texture, and provides a smooth, dry-touch feel.

Is it safe for sensitive skin?

Yes, it carries a low irritation potential per safety assessments.

Does it cause acne?

No, with a comedogenic rating of 0, it does not promote breakouts.