Nucleo Longevity
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Ceramides

ceramides · ceramidi · skin lipids

Barrier lipids that help restore comfort and reduce water loss in dry, compromised skin.

TypeCosmetic (topical)

The grade answers: What does the human evidence support for: Barrier repair & comfort?

Grade

B

Moderate

The grade rates evidence quality — it is not advice to take or buy.

Class
Skincare / topical
Primary use
Barrier repair & comfort
Evidence strength
medium
Last reviewed
2026-07-01

Bottom line

One of the most sensible 'comfort and barrier' ingredients: ceramides are part of your skin's own mortar, and replacing them helps dry or barrier-stressed skin. Best evidence is for restoring the barrier, not dramatic anti-aging.

What the evidence says

Ceramides are a major lipid component of the skin barrier, and their depletion is linked to dryness and barrier dysfunction. Controlled studies of ceramide-containing moisturisers (often with cholesterol and fatty acids in a physiological ratio) show improved hydration, reduced trans-epidermal water loss and better comfort in dry or barrier-compromised skin. This is a cosmetic barrier-support claim, not treatment of any skin disease, and the finished product's ratio and formulation matter as much as the presence of ceramides on the label. Grade B for solid barrier evidence.

Key studies

  1. [1]
  2. [2]

    Physiological lipid ratios in barrier repair · review

    Balanced lipid ratios matter for repair.

    Open on PubMed ↗
  3. [3]

    Skin barrier lipids and dryness (review) · review

    Why ceramide depletion tracks with dry, uncomfortable skin.

    Open on PubMed ↗
See all studies on PubMed ↗

Mechanism

Replenish the intercellular lipid matrix ('bricks and mortar' model) that limits water loss and keeps the barrier intact; work best alongside cholesterol and free fatty acids in balanced proportions.

Safety

Very well tolerated, including on sensitive and dry skin; among the lowest-irritation actives. Suitable for frequent use.

Dosage context

Effect depends on the full lipid formulation rather than a single percentage; products combining ceramides with cholesterol and fatty acids in a physiological ratio have the best support.

Examples of application

  • Used in a moisturiser, ideally with cholesterol and fatty acids.
  • Layered over hydrating serums to seal in water.
  • A go-to for dry, tight or barrier-stressed skin.

From the field

Ceramides are the 'comfort and barrier' pick that actually makes sense — they're literally part of your skin's mortar. We grade them B and keep the claim honest: restore the barrier, don't promise a facelift.

Related molecules

NiacinamideBPanthenol (provitamin B5)CHyaluronic acidC
How we assign grades → Method