INCI: Ceramide EOP - Also known as: Ceramide 1, Acylceramide, Esterified Omega Ceramide

QUICK FACTS

What is Ceramide EOP?

Ceramide EOP - where EOP designates esterified omega-hydroxy fatty acid linked to phytosphingosine - is classified as an acylceramide and one of the most structurally distinctive ceramide types in the human stratum corneum. In older nomenclature it was known as Ceramide 1. Its defining structural feature is a very long chain fatty acid (typically C30-C34) with a linoleic acid molecule esterified at the omega position - a molecular architecture that gives Ceramide EOP a studied role in the lipid lamellar assembly that the research literature suggests no other ceramide type can replicate.

This particular structure means Ceramide EOP is studied in connection with acting as a molecular organizer within the lamellar bilayer: its long fatty acid tail is understood to span across adjacent lipid lamellae, contributing to a more stable, more cohesive barrier structure. Research in this area has associated Ceramide EOP with the water impermeability of the skin barrier - suggesting it is not simply additive to the barrier, but may play an architectural role in it.

The research connection between Ceramide EOP and atopic dermatitis is well-documented: individuals with eczema consistently show reduced levels of Ceramide EOP in the skin, and this depletion is associated with increased TEWL and barrier fragility. At Sweet Chemistry, Ceramide EOP appears in both creams where it contributes its architectural character within the complete three-ceramide barrier complex.

What does it do for skin?

Ceramide EOP is studied primarily in connection with a structural role at the lamellar level. Where Ceramide NP and Ceramide AP are researched in connection with filling the interior of the lamellar bilayer, Ceramide EOP's long acyl chain is studied for its possible role in spanning across multiple lamellae - creating a denser, more organized lamellar structure associated with greater resistance to water permeability than shorter-chain ceramides alone may provide.

The linoleic acid esterified at the omega position of Ceramide EOP is also notable from a formulation perspective. Linoleic acid is an essential fatty acid understood to be rate-limiting for the skin's own Ceramide EOP biosynthesis - meaning that in linoleic acid-insufficient skin (frequently associated with dry and eczema-prone conditions), new Ceramide EOP production may be impaired. Topical Ceramide EOP is studied as a way to provide the finished lipid directly, without depending on the skin's own biosynthetic capacity.

Within the Sweet Chemistry creams, Ceramide EOP works as the lamellar scaffold within which Ceramide NP and Ceramide AP are formulated. Together with phytosphingosine and cholesterol, they create a five-component lipid system that addresses barrier architecture at multiple structural levels - a more complete approach than the one- or two-ceramide formulations common in broader market products.

FOUND IN

In 2 Formulas

Ceramide EOP is specific to Sweet Chemistry's two creams - the formulas designed for dry to normal and dry to dehydrated skin - where its studied architectural character is most relevant to the skin types and barrier conditions these products are designed for.

Hydration - Dry to Normal

Elasticity Reinforcing Hydra-Cream 3% Ceramide, Phytosphingosine, Cholesterol Blend (incl. Ceramide EOP) - 1.7 oz / 50 ml

The Hydra-Cream delivers Ceramide EOP alongside Ceramide AP and NP, phytosphingosine, and cholesterol within a 40%-active formula. The complete five-component lipid complex is co-delivered with 3% Matrikynes® peptides and 2% THD ascorbate for a cushioned satin finish.

Hydration - Dry to Dehydrated

Elasticity Reinforcing Lipid-Cream 3% Ceramide, Phytosphingosine, Cholesterol Blend (incl. Ceramide EOP) - 1.7 oz / 50 ml

The Lipid-Cream pairs the three-ceramide barrier complex with shea butter, sea buckthorn seed oil, jojoba seed oil, and a full peptide and vitamin C system - the richest formula in the Max Repair System for chronically dry and dehydrated skin.

WORKS TOGETHER WITH

Barrier Lipid Ceramide NP

INCI: Ceramide NP.

The most widely studied ceramide, present in all four Sweet Chemistry formulas. In the creams, it is formulated within the same complex as Ceramide EOP. Synergy Note: Research suggests Ceramide EOP may contribute an organizing role within the lamellar architecture, while Ceramide NP is studied in connection with the structural interior - their co-formulation is designed to reflect the multi-ceramide character of healthy skin more closely than either alone.

Barrier Lipid Ceramide AP

INCI: Ceramide AP.

An alpha-hydroxy ceramide present alongside Ceramide EOP in both creams, studied in connection with lamellar organization and a more balanced skin surface. Synergy Note: The combination of Ceramide EOP, Ceramide AP, and Ceramide NP reflects the three-tier ceramide hierarchy found in healthy stratum corneum, with each type contributing a different structural character to the overall lipid complex.

Omega Fatty Acid Linoleic Acid / Linolenic Acid

INCI: Linoleic Acid, Linolenic Acid.

Essential fatty acids present in the Hydra-Serum and Oil-Serum providing the free fatty acid component of the barrier lipid trio. Synergy Note: Ceramide EOP contains an esterified linoleic acid molecule as part of its structure. Topical linoleic acid is also studied in connection with the skin's capacity to biosynthesize new Ceramide EOP - addressing both topical replenishment and the raw material for ongoing production.

Stable Vitamin C THD Ascorbate

INCI: Tetrahexyldecyl Ascorbate.

Present at 2% in both creams, THD ascorbate is associated with brightening and collagen-supportive activity. Synergy Note: Vitamin C is studied in connection with the health of fibroblasts and keratinocytes - the cell types associated with barrier lipid production. A more active collagen and barrier environment may support the long-term ceramide-generating capacity of the skin.