Ceramides don't get the hype that retinol or vitamin C do, and honestly that's a shame. They're not glamorous. Nobody's making TikToks about their ceramide journey. But if your skin barrier is compromised — and there's a decent chance it is — ceramides might be the most important ingredient you're not paying attention to.
What ceramides actually are
Ceramides aren't some lab-invented active. They're lipids (fats) that your skin already produces naturally. They make up roughly 50% of your skin barrier — that outermost layer called the stratum corneum that keeps moisture in and irritants out. Think of your skin barrier like a brick wall: the skin cells are the bricks, and ceramides are the mortar holding everything together.
Without enough ceramides, that wall starts to crumble. Moisture escapes, irritants get in, and you end up with dry, flaky, reactive skin that never quite feels comfortable.
Why your ceramides deplete
Several things chip away at your natural ceramide levels. Age is one — ceramide production declines as you get older, which is partly why mature skin tends to be drier. But age isn't the only culprit.
Harsh cleansers strip ceramides directly. If your face feels "squeaky clean" after washing, your cleanser is probably too aggressive. Over-exfoliating is another big one — all those acids and scrubs can thin the barrier faster than it repairs. Cold, dry weather doesn't help either. And hot showers, as lovely as they are, pull lipids right out of the skin.
The golden ratio
Here's something most skincare marketing won't tell you: ceramides work best when paired with cholesterol and fatty acids in a roughly 3:1:1 ratio. This mirrors the natural composition of your skin barrier. A product with ceramides alone is good. A product with all three in the right balance is significantly better.
Look for ingredient lists that include ceramides alongside cholesterol and fatty acids like linoleic acid or stearic acid. Some brands formulate with this ratio deliberately — it's worth checking the actual INCI list rather than trusting front-of-pack claims.
What to look for in products
The most common ceramides in skincare are ceramide NP, ceramide AP, and ceramide EOP. You might also see them listed as ceramide 3, ceramide 6-II, and ceramide 1 respectively (the old naming system). Any of these are good. Some formulations use phytoceramides derived from plants like rice or wheat, which work similarly.
Ceramides work in moisturisers, cleansers, and serums. Moisturisers tend to be the most effective delivery system since they sit on the skin and give the ceramides time to integrate into the barrier.
Who needs ceramides most?
Everyone benefits, but some people really need them. If you have eczema or dermatitis, your skin is ceramide- deficient almost by definition. Sensitive, reactive skin that stings when you apply products — that's likely a barrier issue. If you've overdone it with acids or retinol and your skin is angry, ceramides are part of the repair kit. And if you're over 40, topping up ceramides is just good maintenance.
They're also brilliantly boring in the best way — no purging period, no sensitivity, no adjustment phase. You just start using them and your skin gradually gets calmer and more resilient.
Browse our ceramide ingredient page to see which products contain ceramides and where they rank in the formula, or check out our best barrier repair moisturisers for products that get the ceramide-cholesterol-fatty acid balance right.