SKIN CONCERN GUIDE · Ingredient Notes
Ceramides: What They Do, Their Types, and How to Read the Label
A guide to what ceramides do, the NP, NS, EOP, and AP labeling codes, why cholesterol is often paired with them, and how to choose a product.
Ceramides are lipids that fill the space between cells in the stratum corneum, and they're understood to play a role in how the skin barrier holds onto moisture. On an ingredient list they're listed as separate, coded types — Ceramide NP, Ceramide NS, and so on. Ceramides are hydrating, barrier-supporting ingredients — they are not medicine for acne or inflammation.
Quick answer
- Ceramides are understood to be a major component of the lipids that sit between cells in the stratum corneum.
- On an ingredient list they appear as separate, coded raw materials — NP, NS, EOP, AP, and similar.
- When cholesterol and fatty acids appear alongside them, that generally reflects a formula designed to mirror the skin's natural lipid ratio.
- A higher number of ceramide types doesn't automatically mean proportionally better barrier support.
- Ceramides are not a medicinal ingredient for any specific condition or for acne.
What are ceramides?
The stratum corneum is often compared to a brick wall, with skin cells as the bricks and the lipids between them as the mortar — and ceramides are understood to make up a substantial share of that "mortar."
As skin ages or the skin barrier weakens, the lipid content between cells is reported to decrease, which is why cosmetics use ceramides to help replenish it. Cosmetic-grade ceramides are typically produced through yeast fermentation or synthesis and then purified.
How do ceramides appear on an ingredient list?
| INCI name | What it is |
|---|---|
| Ceramide NP | One of the more common ceramide forms found in skin |
| Ceramide NS | A barrier lipid component |
| Ceramide EOP | A long-chain form |
| Ceramide AP | A barrier lipid component |
Different codes mean structurally different raw materials. Products that combine several types are often described as containing "N types of ceramides," and when cholesterol or fatty acids are included alongside them, that points to a formula designed to more closely match the lipid composition of the stratum corneum.
When are ceramides worth considering?
People often add a ceramide-containing product to their hydrating step during periods of noticeable post-cleanse tightness, or during seasonal transitions when skin tends to feel especially reactive.
That said, there's generally no evidence that ceramides clear breakouts or calm inflammation on their own, and when symptoms are severe, seeing a dermatologist should come before choosing skincare ingredients.
How does SKIN9HARI formulate with them?
| Product | Ceramide-related formulation |
|---|---|
| N.F Cream | Ceramide NP, NS, EOP, AP (4 types) + Cholesterol |
| A.C Cleanser | Ceramide NP, NS, EOP, AP (4 types) + Cholesterol |
Both products have been confirmed against the manufacturer's original full ingredient list to contain exactly these four ceramide types. The N.F Cream carries them in a leave-on hydrating step, while the A.C Cleanser carries the same four in a rinse-off step. Concentrations aren't disclosed on the ingredient list, so we don't state a number.
In one sentence
Ceramides are a lipid family that goes by several different names, and the real question when choosing a barrier-supporting product is how many types are included and what other lipids — like cholesterol or fatty acids — they're paired with.
FAQ
Does more ceramide always mean better results?
Ingredient order can give you a rough sense of proportion, but a higher amount doesn't scale up results in a straightforward way. The ratio to other lipids, like cholesterol and fatty acids, matters too.
Do oily skin types need ceramides too?
Even oily skin can have a weakened barrier, so ceramides can still be a reasonable option. Having more oil on the surface and having a strong barrier are two different things.
Can ceramides be used every day?
As a hydrating, barrier-supporting ingredient, there's generally no specific restriction on daily morning-and-night use. Adjust based on how your own skin responds.
Do ceramides clog pores?
Ceramides themselves aren't generally classified as pore-clogging, though other oils in a given formula can affect individual skin differently.
Should I apply hyaluronic acid or ceramides first?
The common recommendation is to apply a more water-based, hydrating texture first, followed by an oil-forward texture that helps seal that hydration in.
Related guides
- Hyaluronic acid: types, molecular weight, and how to choose
- If your skin is dry but keeps breaking out — a checklist for cleansing and hydration
Written and reviewed by
- Written by: SKIN9HARI Content Team
- First published: September 4, 2026
- Content standards: Content production standards
Sources
- Ceramides and skin function. American Journal of Clinical Dermatology, 2003.
- The chemistry, function and (patho)physiology of stratum corneum barrier ceramides.
- SKIN9HARI N.F Cream and A.C Cleanser full ingredient lists (as published by the manufacturer).
This guide is general skincare information, not medical advice. SKIN9HARI products are cosmetics and are not intended to diagnose, treat, cure, or prevent any disease. If a skin problem is painful, spreading, or persistent, see a dermatologist.