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C16-18 HYDROXYALKYL HYDROXYDIMERDILINOLEYL ETHER.

Valuable / SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

A sophisticated, high-molecular-weight dimer ether that functions as both a high-performance emollient and a structural stabilizer for complex formulations. It creates a refined, breathable barrier on the skin, providing a long-lasting glossy finish while significantly enhancing the stability of active ingredients.

Emollient Skin Conditioning UV Filter Stabilizer Pigment Dispersant Occlusive

Science

This ingredient functions by forming a water-resistant, non-occlusive film on the stratum corneum, which effectively reduces transepidermal water loss (TEWL) to maintain deep hydration. Its unique branched chemical structure acts as a superior dispersant, preventing the crystallization of UV filters and ensuring pigments remain evenly suspended for uniform application.


Research

High confidence
Effective range 1–20%
Optimal

5%

Key findings

  1. 01 Concentrations of 5-20% demonstrate superior stabilization of organic UV filters like Tinosorb S, preventing formula degradation and ensuring consistent SPF protection.
  2. 02 At levels between 1-5%, it has been shown to improve skin turnover rates and reinforce barrier integrity, especially when paired with Vitamin C derivatives to stimulate hyaluronic acid production.

Transparency

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

While often included for its luxurious sensory profile, levels below 1% fail to provide the documented skin turnover and barrier-reinforcing benefits observed in clinical patent data.


The Formula

Solubility
Oil
Optimal pH 4 – 8
0 7 14

Stability

Exhibits exceptional oxidative and thermal stability due to its ether-linked backbone; compatible with a wide range of esters and silicone-based systems.

Synergies

  • L-ascorbic acid derivatives
  • Organic UV filters (Tinosorb S)
  • Inorganic pigments
  • Silicones

Conflicts

  • Aqueous-only systems

Safety

CIR Status
Safe as used (2023 Assessment)
Max tested
20%
Pregnancy
Safe
Sensitization risk Low

Due to its high molecular weight and lipophilic nature, this ingredient is not absorbed systemically, making it an excellent choice for sensitive skin and long-term use.


Your Skin

Yes Normal
Yes Dry
No Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

An exceptional multi-tasking lipid for dry and aging skin that bridges the gap between luxury sensory feel and clinical barrier protection.


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