Ceramides
What Ceramides does in OVESSI formulas, where it sits in a layered ritual, and what to expect when it is on your shelf.
Ceramides are lipid molecules that form approximately fifty percent of the intercellular matrix in the stratum corneum, the skin's outermost defensive layer. When present in adequate concentrations, they maintain barrier integrity by preventing water loss and blocking the entry of irritants and allergens.
What it actually does
The stratum corneum can be understood as a brick-and-mortar structure. Corneocytes are the bricks, and ceramides form much of the mortar. This architecture determines how well the barrier performs its core tasks: holding water in and keeping irritants out. Transepidermal water loss, abbreviated as TEWL, rises when ceramide levels drop. Sensitivity and reactivity follow.
Topical ceramides, when formulated at sufficient percentages and paired with cholesterol and fatty acids in correct ratios, integrate into the lipid bilayers between corneocytes. They do not replace natural ceramides entirely, but they supplement depleted reserves. This reduces TEWL, stabilizes the barrier, and allows the skin to recover from chronic dryness, flaking, or inflammation. The effect is structural, not cosmetic. You are restoring material that should be there.
The OVESSI point of view
We align with the Korean emphasis on barrier health as the foundation of every ritual, and with the Scandinavian preference for unadorned efficacy. Ceramides belong in formulas that are designed to repair, not simply to moisturise. The dose matters. A trace percentage in a serum is not enough. We use ceramide complexes at concentrations that allow them to genuinely contribute to lipid architecture, and we pair them with cholesterol and free fatty acids in ratios informed by research on natural skin lipid composition. This is not about adding a trending ingredient. It is about building a formula that behaves like the barrier itself. Layering a ceramide treatment under an occlusive seal at night gives it the time and environment it needs to integrate.
What to expect, and when
In the first three days, expect a feeling of comfort and reduced tightness. The skin drinks the formula in quickly because it recognizes the lipids as familiar. By day seven, flaking and rough texture begin to soften. TEWL measurements, if you were to take them, would start to decline. By day fourteen, the barrier is measurably more stable. Reactivity to wind, cold, or new products lessens. By day twenty-eight, the skin holds moisture more effectively on its own, and the cycle of dehydration and sensitivity interrupts. This is not a glow or a transformation. It is a return to baseline function. The skin stops sending distress signals. It feels neutral again, which is the goal.
How to layer it in your ritual
Ceramides belong in the treat or seal step, depending on the formula. A ceramide serum goes after toning and before cream. A ceramide cream is the final step at night, or second-to-last if you use an occlusive balm. Morning application is useful for dry or compromised skin, but the real work happens at night when the skin is in repair mode and you can afford a heavier texture. If your barrier is damaged, start with ceramides before introducing actives like retinoids or acids. Let the barrier stabilize first. Once it does, ceramides become the safety net that allows you to use stronger treatments without penalty. All skin types benefit, but dry, dehydrated, eczema-prone, and post-procedure skin need them most.
Where it lives on our shelf
We house ceramides in formulas built for repair and daily reinforcement. The Barrier : Ceramide Repair Night Cream is a dedicated overnight treatment that layers ceramides with cholesterol and fatty acids in barrier-mimetic ratios. For those who prefer texture and coverage in one step, the The Cover : CC Ceramide Stick in 20 Light, The Cover : CC Ceramide Stick in 25 Medium, The Cover : CC Ceramide Stick in 30 Tan, and The Cover : CC Ceramide Stick in 35 Deep deliver ceramides in a balm-to-powder format that evens tone while treating the barrier throughout the day.
Common questions
Can I use ceramides with retinoids or acids? Yes, and you should, because ceramides buffer the barrier stress that actives can create.
Do I still need ceramides if my skin is oily? Yes, because barrier lipids and surface oil are not the same thing, and oily skin can still have a compromised barrier.
How long does it take to repair a damaged barrier with ceramides? Typically two to four weeks of consistent nightly use, depending on the severity of the damage.
Reviewed by
Danny Isaac, Head of Product Development, OVESSI.
Last reviewed: June 2026.
Further reading
A short, curated set of references where the science behind this page is documented in peer-reviewed literature.
- Schild J, Kalvodová A, Zbytovská J, et al. The role of ceramides in skin barrier function and the importance of their correct formulation for skincare applications. Int J Cosmet Sci. 2024;46(4):526-543. PMID: 39113291.
- Almeida C, Filipe P, Rosado C, et al. Nanodelivery Strategies for Skin Diseases with Barrier Impairment: Focusing on Ceramides and Glucocorticoids. Nanomaterials (Basel). 2022;12(2). PMID: 35055292.
- Wu Y, Wangari-Olivero J, Zhen Y. ARTICLE: Compromised Skin Barrier and Sensitive Skin in Diverse Populations. J Drugs Dermatol. 2021;20(4):s17-s22. PMID: 33852256.
How it compares, layers and partners
Editorial answers to the questions our customers ask most. Not a buying guide. A way to understand why this ingredient sits where it does in a ritual.
Ceramides or hyaluronic acid for the barrier?
Hyaluronic acid hydrates. Ceramides repair. They answer different questions. Skin that feels tight after cleansing wants ceramides. Skin that feels thirsty in the afternoon wants hyaluronic. Most healthy rituals layer both, hyaluronic at the water step and ceramides at the seal.
Ceramides, cholesterol and fatty acids.
The barrier is made of three things in roughly equal measure. Ceramides, cholesterol and fatty acids. A formula that uses ceramides alongside cholesterol and a fatty acid like linoleic does the most repair. This is the structure behind The Barrier and The Velvet.
Ceramides over a heavier balm?
A balm seals what is already there. Ceramides become part of what is there. For long-term healing, a ceramide cream is the better answer. A balm is the right choice on top of that, for the coldest weeks of the year.
OVESSI products that use Ceramides
Every formula below is built around Ceramides as one of its working actives. Each one folds the ingredient into a different texture and ritual step.
Concerns Ceramides helps with
Skin concerns where Ceramides is a documented or formulation-relevant active in our rituals.
Ingredients that work alongside it
Actives that complement, layer with, or formulate well next to this ingredient. Open any to read its reference page.
Rituals built around it
The OVESSI rituals that lean on this ingredient as one of their anchor actives.
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