Let’s be honest. Most of us have a short list of ingredients we look for in skincare – maybe hyaluronic acid, maybe vitamin C. But beta-glucans? They’re probably not even on your radar even though they can seriously change the game for your skin.
These rarely talked about hydrators are finally starting to get the credit they deserve. And once you know what they do, you’ll wonder how your skincare routine ever got by without them.
So, What Are Beta-Glucans?
Beta-glucans are naturally occurring sugars – specifically, long chains of glucose molecules. They fall under the broader category of polysaccharides (yep, the same family), and you’ll usually find them in oats, mushrooms, barley, and yeast. While that might sound like breakfast, these molecules aren’t just good in your bowl – they’re incredible for your face.
In skincare, beta-glucans are mainly known for being deeply hydrating and calming. But there’s more. They don’t just sit on the surface and make things feel soft. They actually dive into the skin (not too far – just the right amount) and help it hold onto moisture better over time. Think of them as moisture magnets with bonus perks.
Not Just a Moisturizer
Hydration is great, but beta-glucans don’t stop there. They’re also excellent at reducing redness, calming irritation, and helping your skin stay strong and healthy. If your skin has ever been angry – sunburned, wind-chapped, over-exfoliated, or just moody – beta-glucans can help it chill out.
They’re also packed with antioxidant benefits. That means they help protect your skin from things like pollution, stress, and UV exposure – all of which can speed up aging. Beta-glucans can also nudge your skin into making more collagen, which is what keeps everything looking firm and bouncy. No needles required.

Beta-Glucans vs. Hyaluronic Acid
You’ve probably heard a lot more about hyaluronic acid than beta-glucans. And sure, hyaluronic acid is a hydration star – but it’s not the only one.
Here’s how they stack up: hyaluronic acid mostly hydrates the surface of your skin. That’s great if you want a quick plump. Beta-glucans go deeper. They actually help your skin retain water long-term, which leads to real changes in how hydrated and smooth your skin looks and feels over time.
Plus, beta-glucans do more than just moisturize. They form a light, protective film on your skin that helps lock moisture in and keep irritants out. They’re especially helpful if your skin barrier needs support – which is pretty common if you’re using exfoliating acids, retinoids, or live in a dry climate.
Where the Research Stands
Beta-glucans aren’t just buzzy – they’re backed by solid research. One study published in the Journal of Cosmetic Dermatology found that beta-glucans significantly improved hydration, elasticity, and skin texture. People using products with beta-glucan reported smoother, more supple skin in just a few weeks.
On top of that, beta-glucans are known to encourage collagen production – something that naturally slows down as we age. More collagen = firmer, more youthful-looking skin. And that’s a win for anyone.
How to Add Beta-Glucans to Your Routine
You don’t need to overhaul your entire skincare shelf. Beta-glucans are already in a bunch of moisturizers, serums, essences, and masks. They’re especially common in products labeled “soothing,” “hydrating,” or “barrier-repairing.”
If you want to start simple, try a serum that lists beta-glucan high on the ingredient list (ideally in the top third). Use it after cleansing and before moisturizing, just like you would with a hyaluronic acid serum. And if your skin’s on the sensitive side, even better – beta-glucans are gentle and non-irritating, even for reactive skin.
They also play well with others. You don’t have to stop using actives like retinol, vitamin C, or AHAs. In fact, adding beta-glucans to your routine can actually help your skin tolerate those stronger ingredients a little better.
Why More Brands Are Turning to Beta-Glucans
The skincare world is catching on. According to Precedence Research, the global beta-glucan market was valued at over $652 million in 2024 and is projected to hit around $1.2 billion by 2034. That’s a pretty big leap – and a clear sign that more people are starting to care about what these ingredients can do.
Why the surge? Simple. Consumers are getting smarter about what works, and beta-glucans deliver noticeable, feel-good results. They’re gentle, they multitask, and they support your skin in more ways than one.

Why Your Skin Might Really Love Beta-Glucans
If you’re dealing with dryness, inflammation, redness, or a compromised barrier, beta-glucans can help turn things around. But even if your skin isn’t in “emergency mode,” they’re still a solid addition. They work quietly behind the scenes to keep everything balanced and hydrated – like a safety net for your skin.
And unlike some ingredients that require patience and a little tolerance, beta-glucans are immediately comforting. You’ll notice your skin feels calmer and smoother almost right away, and with continued use, it just gets better.
One Last Thing
You don’t need hype to know when something works – and beta-glucans absolutely do. They hydrate. They soothe. They protect. And they make it easier for your skin to look and feel its best. Whether you’re dealing with sensitive skin, signs of aging, or just want a little more glow, this ingredient is worth a spot in your routine.
Beta-glucans may not be the loudest name in skincare, but they’re the kind of quiet performer that delivers every single time.
Frequently Asked Questions about Beta-glucans
What foods or natural materials supply the most beta‑glucan?
Oats and barley top the list among everyday foods—three grams of the soluble fiber, the amount the FDA links to cholesterol benefits, can be met with a generous bowl of rolled oats or a serving of high‑beta‑glucan barley varieties, while certain baker’s yeasts and medicinal mushrooms contribute more branched forms for supplements and skincare extracts. (PMC, Livestrong.com)
How can these glucose chains help my heart?
Soluble cereal beta‑glucans form a viscous gel in the small intestine that traps bile acids, prompting the liver to pull LDL cholesterol from the bloodstream to make more bile; the FDA allows a heart‑health claim on labels when a food delivers at least three grams per day. (U.S. Food and Drug Administration, WebMD)
Do they really boost immunity?
Yeast and mushroom beta‑glucans bind the pattern‑recognition receptor Dectin‑1 on neutrophils, macrophages, and other innate immune cells, priming them to clear pathogens more efficiently and, according to recent laboratory and animal work, re‑programming bone‑marrow precursors toward better front‑line defense. Early human trials see fewer colds and livelier post‑vaccine responses, but results vary with dose and purity. (PubMed, Nature)
What do they do for skin when used in creams or serums?
Purified oat beta‑glucan wraps the stratum corneum in a breathable film that pulls in water and, at the cellular level, turns on the same Dectin‑1 pathway to speed barrier repair, heighten junction proteins, and calm inflammation; recent reviews and small clinical studies echo these effects, noting smoother texture and reduced redness within four weeks. (PMC, Kenvue)
Are there side effects I should know about?
Purified beta‑glucans are generally well tolerated; the main caveat is the classic fiber effect—bloating or loose stools—when someone leaps quickly to multi‑gram oral doses, so adding them gradually and drinking extra water helps. Topically, reactions are rare unless residual oat or yeast proteins remain; reputable suppliers test for allergens to keep formulas gentle. (WebMD)