Ceramide EOP (formerly Ceramide 1) is a unique omega-acyl ceramide containing ester-linked linoleic acid and phytosphingosine. It is the 'mortar' of the skin barrier, covalently binding to corneocytes and organizing the lamellar lipid matrix. Critical for long-periodicity lamellar phase formation.
Key Skin Benefits
+ Essential for lamellar lipid organization
+ Binds covalently to corneocytes (unique among ceramides)
+ Required for long-periodicity barrier phase
+ Critical for proper skin barrier formation
Pros
+ Unique omega-acyl structure with linoleic acid
+ Essential component of physiological lipid mixtures
+ Key 'mortar' molecule in brick-and-mortar barrier model
+ Synergistic with NP + AP ceramides at 1:1:1 ratio
Cons
− Very expensive (most costly ceramide)
− Extremely difficult to formulate (requires lamellar systems)
− Susceptible to oxidation (contains linoleic acid)
− Not effective as standalone — needs lipid mixture
Specifications
Property
Value
Usage Areas
Face, Eye, Body, Hair
Product Type
Leave-On, Rinse-Off
Source
Synthetic (biotech)
Natural Level
Synthetic (nature-identical)
Safety Ratings
Metric
Rating
Skin Sensitivity
0/5 (none)
Comedogenic Rating
0/5
EWG Score
1/10
Regional Regulatory Limits
Region
Leave-on %
Rinse-off %
Status
EU (CosIng)
No limit
No limit
Allowed
US (CIR/FDA)
No limit
No limit
Allowed
Japan (MHLW)
No limit
No limit
Allowed
ASEAN
No limit
No limit
Allowed
China (NMPA)
No limit
No limit
Allowed
Typical Usage % by Product Type
Product Type
Typical %
Barrier repair cream
0.005 - 0.1%
Anti-aging serum
0.005 - 0.05%
References
Bouwstra JA et al. (1999) — Ceramide 1 role in lipid organization. PMID: 10564554
van Smeden J et al. (2014) — Ceramides in skin barrier. PMID: 24509859