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CETYL MYRISTATE.

Valuable CAS 2599-01-1 / SKIN CONDITIONING, SKIN CONDITIONING - EMOLLIENT

An advanced fatty acid ester that functions as a structural emollient, providing a protective moisture seal while refining the tactile profile of skincare formulations. It is characterized by its ability to bridge the gap between deep skin conditioning and a velvety, non-greasy finish.

Occlusive Emollient Penetration Enhancer Skin Conditioner Texture Modifier

Science

Cetyl Myristate operates through a dual-action pathway: first, it acts as an occlusive barrier, forming a breathable film that inhibits transepidermal water loss (TEWL) to sustain hydration levels. Second, it serves as a biomimetic penetration enhancer, temporarily modulating the lipid architecture of the stratum corneum to increase the bioavailability and absorption of co-formulated active ingredients.


Research

High confidence
Effective range 4–20%
Optimal

7%

Key findings

  1. 01 Topical application of cetylated fatty acids significantly improved joint mobility and functional physical performance, demonstrating potent anti-inflammatory potential.
  2. 02 Proven effective in nanoparticle delivery systems for enhancing the transdermal flux of bioactive agents through the skin barrier.

Transparency

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

While often used as a secondary texture modifier at low levels, clinical data suggests that concentrations above 4% are required to unlock its functional benefits as a penetration enhancer and barrier repair agent.


The Formula

Solubility
Oil
Optimal pH 3 – 12
0 7 14

Stability

A stable waxy solid with a melting point of 38-51°C. It maintains structural integrity across a broad pH spectrum but may undergo hydrolysis in extreme pH environments (<3 or >12).

Synergies

  • Lipophilic actives
  • Ceramides
  • Fatty acids

Conflicts

  • Strong oxidizing agents
  • Strong acids
  • Strong bases

Safety

CIR Status
Safe as used
Max tested
7%
Pregnancy
Safe
Sensitization risk Low

Recognized as non-toxic and non-sensitizing. Its components are also permitted by the FDA as direct food additives, underscoring its high safety profile.


Your Skin

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

Our Assessment

Valuable

An exceptional emollient for dry and compromised skin that doubles as a delivery system for deeper ingredient penetration, though it should be used with caution in acne-prone routines due to its high comedogenicity.


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