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

CETYL DIMETHICONE.

Valuable CAS 191044-49-2 / SKIN CONDITIONING - EMOLLIENT

An advanced silicone-alkyl hybrid that bridges the gap between classic dimethicones and lipid-rich emollients. This specialized polymer provides a breathable, non-greasy protective seal while dramatically improving the structural integrity and application feel of complex skincare formulas.

Summary

Emollient Skin Conditioning SPF Booster Emulsion Stabilizer Texture Enhancer

Science

Mechanism of Action

Operates as a high-performance occlusive emollient by forming a semi-permeable, breathable film that curbs transepidermal water loss (TEWL). It functions as a surface-tension modifier, enabling uniform dispersion of pigments and UV filters, which ensures a cohesive protective layer on the skin's surface.

Research

Clinical Evidence

High confidence
Effective range 0.5–4%
Optimal

2.5%

Key findings

  1. 01 Concentrations as low as 0.5–1.0% significantly boost SPF performance by enhancing film uniformity and UV filter dispersion.
  2. 02 At 2.4%, it successfully stabilizes multi-phase W/O/W emulsions for 30 days at elevated temperatures (40°C), facilitating precise active ingredient delivery.
  3. 03 Formulations utilizing 2.5–4.0% as a primary emulsifier maintain physical stability for over 3 months while carrying botanical extracts.

Transparency

Dusting Analysis

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

While effective at low concentrations (0.5%) for SPF boosting, levels below this are unlikely to provide the tactile or structural benefits Cetyl Dimethicone is known for.

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 10
0 7 14

Stability

Exhibits exceptional stability across a wide pH range due to its silicone-alkyl backbone; ideal for water-in-oil (W/O) systems with an HLB of approximately 5.

Synergies

  • Mineral UV filters (Zinc Oxide, Titanium Dioxide)
  • Organic UV filters
  • Botanical lipids
  • Hydrophobic pigments

Conflicts

  • Highly polar aqueous systems lacking secondary emulsifiers
  • Strong oxidizing agents

Safety

Safety Profile

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

Its large molecular weight prevents significant dermal absorption, making it biologically inert and safe for long-term use.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A precision-engineered stabilizer and emollient that is essential for achieving uniform sun protection and superior formula elegance.

Related

Similar Ingredients

Finding similar ingredients…