Ceramides

By Nur → Last verified 9/26/2026

What it is

Ceramides are lipids that make up a large share of the material naturally found between skin cells, forming a core part of the skin's barrier. Formulas use named types like Ceramide NP, and some combine several types into a complex.

What the evidence says

The often-cited ideal ratio, roughly 3 parts ceramide to 1 part cholesterol to 1 part fatty acid, mirrors skin's own natural lipid composition and has real support from barrier-repair research, though it's best understood as an evidence-informed formulation target for compromised skin specifically, not a universal rule every effective moisturizer has to match. Formulas listing multiple ceramide types alongside cholesterol tend to be positioned as more serious barrier-repair options than single-ceramide formulas.

Who it's for

Anyone with signs of a compromised barrier, stinging from products that didn't used to bother you, persistent flaking, or unexplained redness.

Worth knowing

Very oily or acne-prone skin may find rich ceramide-heavy creams too heavy, a lighter ceramide serum or essence format may suit better than a dense cream.

Where you'll find it

Products in our catalog that list Ceramides as a key ingredient.

Frequently asked

What do ceramides do for skin?

They reinforce the skin barrier and help it retain moisture, working alongside cholesterol and fatty acids to mimic the skin's own natural lipid composition.

What's the ideal ceramide-cholesterol ratio?

A roughly 3:1:1 ratio of ceramide to cholesterol to fatty acid mirrors skin's natural lipid makeup and has real support from barrier-repair research, though it's a formulation target for compromised skin, not a rule every moisturizer must follow.

Are multi-ceramide formulas better than single-ceramide ones?

Formulas listing multiple ceramide types alongside cholesterol tend to be positioned as more serious barrier-repair options, though a single well-formulated ceramide can still be effective.

Are ceramide creams too heavy for oily skin?

Rich ceramide creams can feel heavy on very oily or acne-prone skin. A lighter ceramide serum or essence format may be a better fit than a dense cream.