Ceramides and hyaluronic acid are two of the most talked-about ingredients in modern skincare — and they're often mentioned together, sometimes even interchangeably. But they support the skin in genuinely different ways, and understanding that difference helps explain why an effective barrier-support routine usually includes both, rather than choosing one over the other.
For a broader look at how the skin barrier works, see our full guide: What Is the Skin Barrier?
What Do Ceramides Do?
Ceramides are lipids — naturally occurring fats found in the outermost layer of the skin (the stratum corneum). Alongside cholesterol and fatty acids, they help form the structure of the skin barrier itself.
Think of ceramides as part of the skin's physical architecture: they help hold skin cells together and support the barrier's ability to retain moisture and keep environmental stressors out. When ceramide levels are well supported, skin tends to feel smoother, more resilient, and better able to maintain hydration.
What Does Hyaluronic Acid Do?
Hyaluronic acid works differently. Rather than forming part of the skin's structure, it's a humectant — meaning it attracts and holds onto water, drawing moisture to the skin's surface and helping it stay there.
A single gram of hyaluronic acid can hold a significant amount of water, which is why it's widely used to support hydration and help skin appear plumper and more comfortable.
The Key Difference
| Ceramides | Hyaluronic Acid | |
|---|---|---|
| Type | Lipid (fat) | Humectant |
| Role | Supports the skin barrier's structure | Attracts and holds moisture |
| Where it works | Within the skin barrier itself | Primarily supports hydration at the skin's surface |
| Best paired with | Occlusive/moisturising ingredients | Hydrating serums, followed by a moisturiser to help lock hydration in |
In short: Hyaluronic acid helps attract and retain moisture, while Ceramides help support the skin barrier.
Why REVEA CALM Uses Both
This is exactly why the CALM system is built as a two-step routine rather than a single product. CALM Barrier Support Serum is formulated with a multi-weight hyaluronic acid complex to help attract and retain surface hydration, while CALM Barrier Support Cream contains a multi-ceramide complex (Ceramide EOP, NP and AP) alongside cholesterol and phytosphingosine to help support the skin barrier's structure.
Using them together follows the logic of how these ingredients actually function — hydration first, then barrier support to help maintain it.
Explore the REVEA CALM Barrier Support Duo—a simple two-step routine combining a hyaluronic acid serum with a ceramide moisturiser.
Do You Need Both, or Just One?
If your skin is generally comfortable but occasionally feels dehydrated, a hyaluronic acid serum alone may be enough day to day. If your skin regularly feels tight, rough, or reactive — signs that the barrier itself may need more support — a ceramide-containing moisturiser becomes more important, ideally alongside a hydrating serum rather than instead of one.
For dry, dehydrated-feeling or sensitive-feeling skin, a routine combining hydrating ingredients such as hyaluronic acid with barrier-supporting ingredients such as ceramides can provide a complementary approach to hydration and skin-barrier support.
Frequently Asked Questions
Can I use ceramides and hyaluronic acid together?
Yes. Ceramides and hyaluronic acid perform different but complementary roles. Hyaluronic acid helps attract and retain moisture, while ceramides help support the skin barrier and maintain moisture. They can be used together as part of a hydration and barrier-support routine.
Which should I apply first, ceramides or hyaluronic acid?
Generally, lighter, water-based products go first. Apply a hyaluronic acid serum to clean, dry skin, then follow with a ceramide-containing moisturiser to help seal in that hydration.
Is one better than the other for dry skin?
They address dryness differently rather than one being "better." Hyaluronic acid helps bring moisture to the skin's surface, while ceramides help the barrier retain it — both are relevant to dryness, which is why they're often used together.
Do ceramides and hyaluronic acid work for sensitive skin?
Both are widely used in formulations designed for sensitive skin, as they support hydration and barrier function without relying on active ingredients that can be irritating for reactive skin types.
Author: REVEA Editorial Team
Updated: 22 August 2026
References & Further Reading
- Coderch L, López O, de la Maza A, Parra JL. Ceramides and skin function. Am J Clin Dermatol. 2003;4(2):107–129. doi:10.2165/00128071-200304020-00004.
- Meckfessel MH, Brandt S. The structure, function, and importance of ceramides in skin and their use as therapeutic agents in skin-care products. J Am Acad Dermatol. 2014;71(1):177–184. doi:10.1016/j.jaad.2014.01.891.
- Zhu J, Tang X, Jia Y, Ho CT, Huang Q. Applications and delivery mechanisms of hyaluronic acid used for topical/transdermal delivery – A review. Int J Pharm. 2020;578:119127. doi:10.1016/j.ijpharm.2020.119127.
- Verdier-Sévrain S, Bonté F. Skin hydration: a review on its molecular mechanisms. J Cosmet Dermatol. 2007;6(2):75–82.
