Ingredient · Barrier Lipid
Ceramides
INCI · Ceramide NP
Related names and forms: Ceramide AP · Ceramide EOP · Ceramide NS. This list does not indicate synonyms or exact ingredient matches.
Ceramides (listed in INCI under subtypes such as Ceramide NP, Ceramide AP and Ceramide EOP) are the dominant lipid family in the skin's natural barrier. Together with cholesterol and free fatty acids, they form the 'barrier lipid trio' in the stratum corneum lipid matrix. Ceramide is a class name: labels list subtypes named for their structure, rather than a single 'ceramide'. Modern INCI nomenclature uses two letters: the first identifies the fatty acid type (N: non-hydroxy, A: alpha-hydroxy, E: esterified omega-hydroxy), and the second the sphingoid base (P: phytosphingosine, S: sphingosine). Ceramide NP (formerly Ceramide 3), for example, means a non-hydroxy fatty acid plus phytosphingosine. Reading ceramides in a product therefore usually means considering which subtypes are present alongside which other lipids. Ceramides are generally used at very low doses; the balance of the three lipids matters more than a high dose of a single ceramide. The most common label name is 'Ceramide NP'. Ceramide NP is a defined molecule with a verified individual PubChem record (CID 57378373, C36H71NO4); the subtypes Ceramide AP and Ceramide EOP also have separate defined records.
i. Cosmetic Functions
Frequently Discussed Effects
The following headings summarise areas of effect frequently discussed in the literature; visible results in each area require regular use and a suitable formula.
Barrier Function Support
A key structural ingredient in formulas designed to reduce moisture loss from the skin.
Sensitivity Support
Can contribute to a formula's gentleness for sensitive profiles.
Synergy With Other Lipids
Offers a more complete barrier profile alongside cholesterol and fatty acids.
Mechanism
What Happens Within the Skin?
The following points summarise mechanisms from dermocosmetic literature in plain English. Klaris presents them as background information to help readers understand the context, not as medical claims.
Step 1
The Dominant Member of the Barrier Lipid Trio
Forms the barrier's dominant lipid family alongside cholesterol and free fatty acids in the stratum corneum lipid matrix.
Step 2
Class and INCI Nomenclature
A class rather than a single molecule; the INCI name identifies the subtype using letters for fatty acid type (N/A/E) and sphingoid base (P/S), as in Ceramide NP.
Step 3
Lamellar Organisation
The orderly arrangement of lipids into lamellar structures is a frequently cited barrier model; ceramides form the framework of this structure.
Step 4
Low Dose and Three-Way Balance
Usually used at very low doses; balance with cholesterol and fatty acids matters more than a high dose of one ceramide.
Step 5
The Link With Phytosphingosine
Phytosphingosine is the sphingoid base of some ceramides: it is a building block of a ceramide, not a ceramide itself.
ii. Role in the Formula
How Is It Read on a Label?
Ceramides are usually formulated at very low percentages, but their perceived effect becomes more noticeable when they are combined with other barrier lipids (cholesterol and fatty acids) in appropriate ratios. A balanced lipid blend offers a more useful basis for assessment than a high dose of a single ceramide.
A Closer Look · pH, Stability, Synergy
The formulation role of ceramides is almost always considered as part of a group: not as a standalone hero active, but as the dominant member of the barrier lipid trio alongside cholesterol and free fatty acids. A frequently cited framework in the literature is the presence of these three lipid families together in a balanced ratio. This makes 'more ceramide is better' a misleading expectation; well-designed formulas use low doses within a balanced lipid composition. For label reading, modern INCI nomenclature is particularly useful: the two letters after 'Ceramide' describe the subtype's structure (first letter, fatty acid type: N/A/E...; second letter, sphingoid base: P/S...). The older numbered system (Ceramide 1, 2, 3) may still appear; Ceramide NP, for example, is the same as the former Ceramide 3. Formulas also use 'pseudo-ceramides', synthetic ceramide-like ingredients. Although not identical to skin ceramides, these target a similar lipid architecture. Texture also provides context: rich ceramide formulas may feel heavy on oily, congestion-prone profiles, while lightweight, water-based formulas suit a broader range. When assessing a ceramide product, Klaris considers the subtypes, accompanying lipids (cholesterol, fatty acids and phytosphingosine), texture and dose as a whole. The appearance of barrier support comes from the compatibility of the lipid blend, not a single ceramide.
Typical Concentration Range
Typically a low % (dependent on the formula and blend)
Ingredient Family
Oils and Lipids
iii. Sensitivity Advisory
A Note on Extra Care in Context
Rich ceramide formulations may feel heavy on oily, congestion-prone profiles or warrant extra attention to the appearance of pores; this is a contextual observation tied to the formula's texture. Lightweight, water-based ceramide formulas suit a wider range of profiles.
A sensitivity advisory is not an instruction for use; where individual health circumstances, pregnancy or known sensitivities are involved, discussing the decision with your doctor may be a more contextual approach.
Common Misconceptions
Frequently Confused Points
Common Belief
Adding ceramides repairs or treats the skin barrier.
A More Contextual Reading
Ceramides are a dominant component of a barrier-supporting composition; their contribution to the appearance of the barrier comes from the whole lipid blend with cholesterol and fatty acids. 'Repairs/treats' is not an absolute promise; support is assessed in context.
Common Belief
The more ceramide, the better.
A More Contextual Reading
Ceramides are generally used at very low doses. The cholesterol-ceramide-fatty acid balance is considered more important than a high dose of a single ceramide. Well-designed formulas keep doses measured.
Common Belief
All ceramides are the same; 'ceramide' on the label is enough.
A More Contextual Reading
Ceramide is a class, and its subtypes (Ceramide NP/AP/EOP/NS...) differ structurally. The two INCI letters (fatty acid type plus sphingoid base) identify the type used.
Common Belief
Synthetic pseudo-ceramides are 'fake' and useless.
A More Contextual Reading
Although not identical to skin ceramides, pseudo-ceramides target a similar lipid architecture. 'Synthetic means useless' is a generalisation; the formula as a whole is what matters.
Scientific Basis
Sources and Their Scope
The following headings indicate areas of research; they are not citations of a specific publication or confirmation that every statement on this page has been verified. The links provided should be read with their individual scope in mind.
- International INCI / CosIng database
- Dermocosmetic research publications
- Formulation chemistry guides
Source Links
- Database RecordPubChem · Ceramide NP Ingredient Record (CID 57378373)
Database records provide ingredient identity and registration information; on their own, they do not establish the effect of a finished product or its suitability for a profile. Search links are not specific research papers.
v. Oils and Lipids Family
Other Ingredients in the Same Family
Explore ingredients in the same functional family to deepen your reading of formulas.
vi. Academy · Related Reading
For a Closer Look
6 Min Read
An Ingredient Guide for Sensitive Skin
Ingredient families that may need extra care when skin is prone to irritation.
5 Min Read
How to Read an INCI List
What the Latin names on a label mean, how ingredients are ordered and what they can tell you about proportions.
7 Min Read
How to Choose a Moisturiser: Ingredients and Texture
Humectants, emollients and occlusives, matching texture to your Identity, and reading a moisturiser's INCI list.
vii. Related Concern Guides
Guides That Include This Ingredient
Klaris · Example Analyses
How Does Ceramides Feature
in Your Products?
Explore product examples to see the ingredient list, general assessment and match score that changes with the example profile together.
Masked products and example profiles, not a personal analysis. Profile matching in the app is part of Klaris Premium. The app is currently available in Turkish. An English version is in preparation.