Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

CETYL BEHENYL DIMETHICONE.

Valuable CAS - / SKIN CONDITIONING - EMOLLIENT

A sophisticated multi-domain alkyl-modified silicone that bridges the gap between protective occlusives and lightweight textures. It is engineered to melt at skin temperature, providing a breathable barrier that mimics the richness of traditional petrolatum without the associated greasiness or tack.

Summary

emollient skin-conditioning texture enhancer SPF booster occlusive

Science

Mechanism of Action

By integrating long-chain alkyl groups (C16 and C22) into a silicone backbone, this molecule forms a thixotropic gel structure. Upon application, the physical pressure and skin heat (32°C-36°C) cause the wax to liquefy, lowering surface tension to promote rapid spreading while creating a high-gloss, non-comedogenic film that significantly reduces transepidermal water loss.

Research

Clinical Evidence

High confidence
Effective range 0.1–10%
Optimal

3%

Key findings

  1. 01 Demonstrated ability to improve UV filter distribution, enhancing SPF efficiency through the creation of a more uniform film at 1.0% - 3.0% concentration.
  2. 02 Successfully mimicked the sensory profile of Cyclopentasiloxane while providing a 'vanishing' effect and sustained moisturization without the tackiness of petrolatum.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

While functional at low levels for texture modification, clinical benefits regarding SPF boosting and significant barrier protection typically require concentrations above 1.0%.

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 10
0 7 14

Stability

Thermally stable with a melting point closely aligned to human skin temperature (32°C - 36°C); resistant to oxidation and stable across a wide pH spectrum.

Synergies

  • Mineral UV filters (Zinc Oxide, Titanium Dioxide)
  • Organic UV filters
  • Plant-based emollient oils

Conflicts

  • Water-only phases
  • Low molecular weight alcohols (IPA)
  • Strong oxidizing agents

Safety

Safety Profile

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

Must be purified to ensure residual cyclosiloxanes (D4/D5) remain below 100ppm to meet modern safety standards.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

An exceptional texture-engineering agent that provides robust barrier protection and sun-care enhancement with a superior, non-greasy skin feel.

Related

Similar Ingredients

Finding similar ingredients…