Beta glucan is a staple in skincare and hugely valuable for anyone who needs gentle hydration and skin barrier support. Despite its many benefits, it is not really a household name outside professional skincare circles. In this article we explore what beta glucan is, what it does for skin, how it compares to more famous hydrators and the best way to use it in your routine.
What is Beta Glucan?
Quite simply, beta glucan is a type of polysaccharide (complex sugar) that you find naturally in oats, mushrooms, yeast and certain grains. It has a long history in both dietary and therapeutic use, dating back centuries in cultures where these foods were staples or part of folk medicine. Oats, for instance, have long been used to soothe dry or inflamed skin. Some accounts trace oat baths and poultices back to ancient Egyptian, Roman and Greek civilisations. Mushroom extracts, meanwhile, feature in several East Asian traditions, including Traditional Chinese Medicine, where they were valued for their immune-boosting effects.
Over time, research has uncovered the compounds and mechanisms behind beta glucan’s health and skin benefits. It is still widely used as a dietary supplement for the immune system, but it has also become increasingly popular in skincare. Like marshmallow root, beta glucan is a natural hydrator. When you apply it to the skin, it forms a lightweight protective film that locks in moisture and helps reduce dryness and irritation.
What are the Benefits of Beta Glucan for Skin?
Beta glucan is a versatile ingredient that delivers several benefits across a wide range of skin types. Here is an overview of the main benefits of beta glucan for skin:
- Intense Hydration: Beta glucan is known for its exceptional ability to hold on to moisture. Studies suggest it can hold more water than even hyaluronic acid, which makes it a potent option for dehydrated or flaky skin.
- Barrier Support: Your skin barrier is crucial for keeping pollutants and irritants out whilst holding moisture in. Beta glucan helps fortify this protective layer, which can lessen the impact of environmental stressors like harsh weather or pollution.
- Calming and Soothing: The soothing properties of beta glucan help with redness or sensitivity. As a result, it can calm reactive skin in conditions like rosacea or eczema.
- Youthful Glow: A well-hydrated complexion looks plumper, more elastic and radiant. By improving moisture levels and supporting skin regeneration, beta glucan can also help soften fine lines over time.
Who Should Use Beta Glucan Skincare?
Beta glucan is generally well tolerated and its benefits are widely applicable. However, it is particularly good for the following skin types:
- Dry or Dehydrated Skin: Regular use helps replenish and lock in moisture, which reduces flakiness and tightness and leaves skin looking fresher and less dull.
- Sensitive or Irritated Skin: The anti-inflammatory properties of beta glucan help soothe redness, itching or discomfort.
- Mature Skin: The hydrating effect makes skin look plumper and more elastic, which softens the appearance of fine lines and wrinkles. You can magnify this by pairing beta glucan with other anti-ageing ingredients.
- Combination or Normal Skin: Even if your skin is not especially dry or sensitive, beta glucan helps keep your complexion balanced and well protected.
How Does Beta Glucan Compare to Other Hydrators?
New ingredients seem to appear almost every day, so it is fair to ask how beta glucan differs from the alternatives. Here is how it compares to other popular hydrators, and how to use them together:
- Hyaluronic acid: Beta glucan and hyaluronic acid are both superstar hydrators that work in slightly different ways. Beta glucan holds a lot of water whilst forming a soothing film on the surface. Hyaluronic acid instead draws water into the deeper layers, holding up to 1,000 times its weight. Layering them maximises moisture retention at multiple levels.
- Polyglutamic acid: Both beta glucan and polyglutamic acid have impressive water-binding abilities. Beta glucan forms a lightweight shield that seals in hydration and reduces redness. Polyglutamic acid is thought to hold four to five times more moisture than hyaluronic acid, so it suits extreme dryness or mature skin. Combining the two delivers high-intensity hydration whilst keeping sensitivity in check.
- Glycerin: Beta glucan creates a moisture veil that reduces water loss and reinforces the barrier. Glycerin is a workhorse that draws water into the top layers. Both boost hydration, but beta glucan may be better if you are prone to irritation because it is gentler and more calming. Glycerin is cheap and widely available, so it is a reliable choice for basic hydration.
- Peptides: Beta glucan offers hydration and barrier support, whilst peptides focus on boosting collagen and elastin for firmness. So beta glucan has the edge for moisturising, but peptides lead for anti-ageing. If you have both dryness and early signs of ageing, use them together.
- Niacinamide: Both ingredients support the skin barrier. Beta glucan excels at locking in moisture and calming redness, whilst niacinamide also regulates oil, reduces the look of large pores and brightens uneven tone. Beta glucan is better at moisturising, niacinamide is broader, and you can combine the two.
- Ceramides: Beta glucan holds water at the surface, whilst ceramides are lipids that act like a glue between skin cells to prevent water loss from within. Ceramides reinforce the deeper structure of the barrier, and beta glucan complements them with immediate surface hydration.
- Panthenol (vitamin B5): Both beta glucan and vitamin B5 attract moisture. However, vitamin B5 excels at barrier repair and smoothing rough patches. Use them together to hydrate, soothe and repair dry or injured skin.
- Squalane: Beta glucan is a water-based hydrator that draws moisture in, whilst squalane behaves like a lightweight oil that stops it evaporating. If you have chronic dryness, use beta glucan to deliver hydration and squalane to seal it in.
How Do You Use Beta Glucan in Your Skincare Routine?
Beta glucan is exceptionally versatile and turns up in a wide range of products. Here are our top tips for using it:
- Cleansers: Starting with a beta glucan cleanser helps clean your skin without drying it out. It is a great option for very dry or sensitive skin.
- Serums, Essences and Toners: These lightweight leave-on products are a good way to introduce beta glucan without changing the rest of your routine. They also let you control the frequency and amount if your skin is sensitive.
- Moisturisers: If you are dealing with dryness, flakiness or a compromised barrier, a beta glucan moisturiser is the easiest way to deliver consistent hydration day or night.
- Face Masks: Beta glucan masks are useful for a more intense hydration boost. They are great when your skin feels especially dry or after an irritating treatment like chemical peels, laser or microneedling.
- Timing and Consistency: You can use beta glucan at any time and more than once a day. In the daytime it reinforces the barrier against environmental stress. At night it provides hydration and reduces water loss whilst your skin repairs.
- Layer Mindfully: Beta glucan works beautifully with other hydrators like hyaluronic acid. It also helps reduce irritation and dryness after actives like exfoliating acids, vitamin C and retinoids.
Is Beta Glucan Safe?
Beta glucan is generally safe and most people tolerate it well, but there is always a risk of allergy, sensitivity or irritation. As with any new ingredient, it is best to take a few basic precautions when you start:
- Patch Test: Apply a small amount on your wrist or behind your ear and wait 24 to 48 hours. If no redness or irritation appears, you can introduce it to your face.
- Consult a Professional: If you have a chronic skin condition, speak with your dermatologist before adding any new ingredient.
- Check the Full Ingredients List: Beta glucan is gentle, but other components in a product, such as strong fragrances or certain alcohols, may irritate sensitive skin. Always check the label first.
As you can see, beta glucan is an unsung powerhouse. It has superior moisture retention and can support your skin barrier whilst soothing irritated skin. It is a great addition to your routine if you have dry, ageing or sensitive skin, and with consistent use it can help hydrate, plump, brighten and smooth. Better still, beta glucan works beautifully alongside other popular hydrators and anti-ageing ingredients, so you can amplify their benefits too.
At City Skin Clinic, we are passionate about personalised skincare. Our online skin clinic offers safe and effective custom skincare treatments. Where appropriate our doctors use ingredients such as tretinoin and hydroquinone to treat skin conditions like acne, hyperpigmentation, melasma and skin ageing. To start your personalised skincare plan, book a virtual video consultation or use our online consultation form. The journey towards great skin starts here.
This article is intended for general informational purposes only and is not a substitute for medical advice, diagnosis or treatment. Always consult a qualified medical provider for any medical concerns or questions you might have.
