Bisabolol vs. Beta-Glucan: Soothing Ingredients for Sensitive Skin Formulations

Sensitive skin formulations require thoughtful ingredient selection. The goal is not simply to add ingredients marketed as “calming,” but to choose materials that support skin comfort, hydration, and barrier function without making the formulation unnecessarily heavy, sticky, or irritating.

Two ingredients that are my favorite for sensitive skin products are bisabolol and beta-glucan. Both can help create gentler skin care formulations, but they are chemically very different and contribute different benefits.

Bisabolol is an oil-soluble terpene alcohol valued primarily for its soothing and redness-reducing properties. Beta-glucan is a water-soluble polysaccharide valued for hydration, barrier support, soothing, and protective film formation.

Understanding these differences will help you decide whether to use bisabolol, beta-glucan, or a combination of both.

Bisabolol and Beta-Glucan at a Glance

What Is Bisabolol?

Bisabolol, commonly listed on a cosmetic ingredient label by the INCI name Bisabolol, is a monocyclic sesquiterpene alcohol. It occurs naturally in several plants and is especially associated with German chamomile.

The form most frequently used in cosmetics is alpha-bisabolol, particularly the naturally occurring form known as levomenol or (-)-alpha-bisabolol. Chamomile essential oil can contain significant amounts of this form of bisabolol, although purified cosmetic bisabolol is a separate ingredient from chamomile essential oil.

What Is Bisabolol Derived From?

Commercial bisabolol can come from several sources.

Candeia Tree

Many natural cosmetic grades are distilled from the South American Candeia tree, botanically identified as Eremanthus erythropappus or by related botanical names used in supplier documentation.

The Candeia tree has historically been one of the primary commercial sources of highly purified natural alpha-bisabolol. However, concerns regarding wild harvesting, conservation, and supply-chain sustainability have encouraged the cosmetic industry to explore more controlled sources.

When purchasing Candeia-derived bisabolol, formulators should request information about:

• Botanical source
• Harvesting practices
• Traceability
• Sustainability certification
• Natural Origin Index
• COSMOS or NATRUE status

Chamomile

Bisabolol naturally occurs in German chamomile, Matricaria recutita. However, isolating enough bisabolol from chamomile for large-scale cosmetic production can be more costly than obtaining it from other sources.

Chamomile essential oil and purified bisabolol should not be treated as interchangeable ingredients. Chamomile essential oil contains numerous aromatic components, while purified bisabolol is a concentrated, more consistent cosmetic raw material.

Fermentation

Newer grades of bisabolol can be produced through precision fermentation using renewable plant feedstocks. For example, BASF describes a fermentation-produced grade made using non-GMO corn feedstock that yields the naturally occurring (-)-alpha-bisabolol isomer and has a Natural Origin Index of 1.

Fermentation can provide several advantages:

• Consistent quality and purity
• Less pressure on wild plant populations
• Greater supply-chain traceability
• Renewable feedstocks
• Reduced variability between production batches

Synthetic Bisabolol

Bisabolol can also be manufactured synthetically. Synthetic grades may contain a mixture of bisabolol stereoisomers rather than primarily the naturally occurring (-)-alpha-bisabolol form.

Synthetic bisabolol can still provide cosmetic functionality, but it may not meet a brand’s definition of natural or qualify under a particular natural cosmetic certification standard.

Is Bisabolol Natural?

Bisabolol can be natural, naturally derived, fermentation derived, or synthetic. The INCI name alone does not identify how it was produced.

A product label may simply list “Bisabolol” regardless of whether the ingredient was:

• Extracted from the Candeia tree
• Isolated from another botanical source
• Produced through fermentation
• Manufactured synthetically

Therefore, formulators must review the specific supplier documentation rather than relying only on the INCI name.

Ask the supplier for:

• Origin statement
• Manufacturing process
• Natural Origin Index according to ISO 16128
• Certificate of analysis
• Technical data sheet
• COSMOS approval or certification
• Vegan statement
• Allergen statement
• Sustainability documentation

Can Bisabolol Be Used in Organic Formulations?

Yes, an appropriate grade of bisabolol can be used in formulations intended for cosmetic natural or organic certification.

However, there is an important difference between a raw material being allowed in an organic formulation and the raw material itself being certified organic.

The current COSMOS databases include natural alpha-bisabolol grades that are COSMOS approved and may be used in COSMOS-certified cosmetic products. COSMOS also lists certain certified bisabolol raw materials with organic content.

A COSMOS-approved raw material without organic content:

• May be permitted in a COSMOS-certified product
• Can contribute to the product’s natural-origin percentage
• Does not necessarily contribute to the calculated organic percentage

A COSMOS-certified raw material with documented organic content may contribute toward the product’s organic percentage.

Always verify the certification status of the exact commercial product. Approval does not automatically transfer between suppliers or between different grades of an ingredient.

Benefits of Bisabolol for Sensitive Skin

Bisabolol is best known as a skin-soothing and skin-conditioning active.

It is frequently used in products developed for:

• Sensitive skin
• Skin prone to visible redness
• Dry or uncomfortable skin
• After-sun care
• After-shave products
• Post-depilation products
• Baby care
• Scalp care
• Products containing potentially irritating active ingredients

Research and supplier documentation associate alpha-bisabolol with anti-inflammatory and soothing activity. BASF identifies sensitive-skin applications and reports that bisabolol can help reduce irritation-induced skin redness.

Bisabolol may be especially useful when a formula needs soothing activity without additional heaviness, tackiness, or significant viscosity.

A Formulation Caution

Bisabolol can also function as a skin penetration enhancer. The Cosmetic Ingredient Review noted that it may increase the absorption of other ingredients in a formulation and advised formulators to consider this effect, particularly when the safety of another ingredient depends on limited dermal penetration. The CIR assessment concluded that bisabolol was safe as used in cosmetics, with reported leave-on use concentrations up to 1%.

This does not make bisabolol unsuitable for sensitive skin. It means that the complete formulation must be evaluated rather than assuming that every soothing ingredient automatically reduces the irritation potential of the finished product.

How Does Bisabolol Feel on the Skin?

Bisabolol is generally a clear, low-viscosity, oil-soluble liquid. Because it is normally used at a low percentage, it does not dramatically alter the texture of an emulsion.

In creams and lotions, it can contribute:

• Light emollient glide
• A smooth application
• A non-tacky finish
• Minimal heaviness
• Little or no noticeable film

Bisabolol does not normally create the hydrated, cushioned, or gel-like feel associated with polysaccharides. It is a good choice when soothing benefits are needed without adding stickiness or significantly changing the viscosity.

Bisabolol Usage Rates

A general cosmetic usage range for bisabolol is:

0.1–1%

A practical starting range for many facial emulsions is:

0.2–0.5%

Older cosmetic-use data cited by the Cosmetic Ingredient Review showed typical concentrations around 0.1–0.2%, with reported use levels extending to 1%.

How to Add Bisabolol to an Emulsion

Because bisabolol is oil soluble, it may be added to:

• The oil phase
• The emulsified product during cool down
• A small amount of the formulation’s oil or ester before incorporation

Adding it during cool down is often preferred when the formulator wants to minimize unnecessary heat exposure. Follow the temperature and processing instructions supplied for the specific commercial grade.

Bisabolol is used at a low percentage and should not be expected to replace the primary emollients, barrier lipids, or occlusive ingredients in a sensitive-skin moisturizer.

What Is Beta-Glucan?

Beta-glucans are naturally occurring polysaccharides composed of glucose molecules connected through beta-glycosidic bonds.

They are found in the cell walls of:

• Oats
• Barley and other grains
• Baker’s yeast
• Mushrooms
• Fungi
• Algae
• Some bacteria

The term “beta-glucan” refers to a family of related molecules rather than one identical ingredient. The source, molecular weight, branching, extraction method, and chemical modification can all influence the material’s solubility, skin feel, and biological activity.

For example, oat beta-glucan is primarily composed of glucose polymers connected through beta-1,3 and beta-1,4 linkages. Oat beta-glucan has a strong affinity for water and is valued for hydration, soothing, and sensory enhancement.

Beta-glucans from yeast and mushrooms commonly contain beta-1,3 backbones with beta-1,6 branching. These structural differences mean that oat, yeast, mushroom, and modified beta-glucans should not automatically be substituted for one another at the same percentage.

What Is Cosmetic Beta-Glucan Derived From?

Oats

Oat beta-glucan is obtained from the soluble fiber found within the oat kernel’s cell walls.

It is particularly useful in moisturizers, serums, gels, masks, and sensitive-skin products. Depending on the grade, it may be supplied as:

• A concentrated powder
• An oat-derived active complex
• A liquid dispersion
• A glycerin-based solution
• Part of a colloidal oatmeal ingredient

Baker’s Yeast

Yeast beta-glucan is commonly isolated from the cell walls of Saccharomyces cerevisiae, the same species widely known as baker’s yeast.

Some yeast beta-glucans are chemically modified to improve their water solubility. One example is Magnesium Carboxymethyl Beta-Glucan, a water-soluble derivative developed from purified baker’s yeast beta-glucan.

Because modified beta-glucans have different INCI names and recommended usage levels, they should be formulated according to their individual technical documentation.

Mushrooms and Fungi

Beta-glucan can also be extracted from mushroom and fungal cell walls. The composition and concentration of mushroom extracts vary considerably, so a mushroom extract containing beta-glucan is not necessarily equivalent to a purified beta-glucan active.

The supplier should identify:

• Mushroom species
• Extraction solvent
• Beta-glucan concentration
• Molecular weight
• Active solids
• Preservatives and carriers
• Recommended usage rate

Fermentation

Certain beta-glucans can be created or purified using controlled fermentation processes. Fermentation can help produce consistent molecular structures and reduce some of the agricultural variability found in botanical extracts.

Is Beta-Glucan Natural?

Beta-glucan is naturally present in oats, yeast, fungi, mushrooms, algae, and other biological sources. A purified beta-glucan obtained through an acceptable physical or biological process may be considered natural or natural origin.

However, not every ingredient carrying the name beta-glucan has the same natural classification.

A commercial beta-glucan may be:

• A purified natural powder
• A natural extract containing beta-glucan
• A fermentation-derived material
• A chemically modified beta-glucan
• A liquid blend containing water, glycerin, glycols, preservatives, and beta-glucan

For example, Magnesium Carboxymethyl Beta-Glucan begins with yeast beta-glucan but is modified to improve water solubility. It would be more accurate to describe this type as a naturally derived or modified beta-glucan rather than an unmodified natural extract.

The complete INCI declaration and manufacturing process must be evaluated.

Can Beta-Glucan Be Used in Organic Formulations?

Yes, certain beta-glucan raw materials can be used in natural or organic-certified cosmetic formulations.

The COSMOS database currently includes approved raw materials containing beta-glucan, including water-based beta-glucan extracts and beta-glucan-containing hydrogels. These approved materials can be used in products certified to the COSMOS standard when all formulation requirements are met.

However, a beta-glucan raw material is not automatically certified organic simply because it comes from oats, yeast, or mushrooms.

An oat beta-glucan produced from organically grown oats may still require separate documentation concerning:

• Extraction method
• Processing aids
• Carriers
• Preservatives
• Organic content
• Certification status

Use the certification documentation for the exact supplier grade to determine whether it is merely permitted in an organic formulation or whether it contributes measurable organic content.

Benefits of Beta-Glucan for Sensitive Skin

Beta-glucan can provide several benefits that are particularly valuable for sensitive, dry, dehydrated, or barrier-compromised skin.

Hydration

Beta-glucan has an affinity for water and can help create a hydrated, conditioned skin feel. It functions as a humectant and film-forming polysaccharide, helping the skin feel softer and less dry.

Skin Barrier Support

Beta-glucan can help support the skin’s moisture barrier by improving hydration and forming a light protective film over the skin.

Research reviews describe topical beta-glucans as soothing ingredients that can help hydrate the epidermis and improve the appearance and texture of the skin.

Soothing Sensitive or Stressed Skin

Beta-glucan is frequently included in products intended to comfort skin affected by:

• Dryness
• Environmental exposure
• Over-cleansing
• Exfoliation
• Retinoid use
• Cosmetic treatments
• Shaving
• General barrier disruption

A yeast-derived Magnesium Carboxymethyl Beta-Glucan active has supplier testing supporting skin-barrier strengthening and soothing benefits for sensitive and irritated skin.

Supporting Skin Recovery

Beta-glucans have also been studied for their role in tissue repair and wound-healing processes. Cosmetic products should not make drug or wound-healing claims without appropriate substantiation, but beta-glucan can be positioned cosmetically as helping support the appearance and comfort of stressed skin.

How Does Beta-Glucan Feel on the Skin?

The sensory effect depends on the beta-glucan’s source, molecular weight, concentration, and supplied form.

In emulsions, beta-glucan may contribute:

• A softer after-feel
• Increased hydration
• A smooth or silky finish
• Light cushioning
• A protective film
• Reduced perception of dryness
• A more substantive moisturizer feel

An oat beta-glucan supplier describes its concentrated ingredient as creating a lightweight, silky, non-greasy finish with quick absorption when used at its recommended level.

However, too much beta-glucan, especially a high-molecular-weight powder, can create:

• Tackiness
• Stringiness
• A gummy texture
• Excessive film formation
• Pilling when rubbed
• Difficulty spreading the emulsion
• Instability caused by improper hydration or clumping

The correct percentage depends on the concentration of active beta-glucan in the supplied ingredient. A liquid ingredient containing 1% beta-glucan cannot be compared directly with a powder containing a much higher active concentration.

Beta-Glucan Usage Rates

There is no single universal usage rate for beta-glucan.

Recommended levels vary substantially according to the supplied form.

Purified or Concentrated Beta-Glucan Powder

A general starting range may be:

0.05–1%

Some highly active modified powders are effective at much lower levels.

Magnesium Carboxymethyl Beta-Glucan

One commercial yeast-derived active has a recommended usage level of:

0.02–0.1%

Enriched Oat Beta-Glucan Powder

One concentrated oat beta-glucan complex is recommended at:

1%

Liquid Beta-Glucan Dispersions

Water- and glycerin-based beta-glucan ingredients may have recommended usage rates around:

1–5%

The higher percentage reflects the fact that these products contain water, glycerin, glycols, preservatives, or other carriers in addition to beta-glucan.

Always calculate how much actual beta-glucan is being added, particularly when comparing formulas made with different commercial products.

How to Add Beta-Glucan to an Emulsion

Beta-glucan is normally incorporated into the water phase or cool-down phase, depending on the grade.

For powdered beta-glucan:

1. Review the supplier’s solubility instructions.
2. Pre-disperse the powder in glycerin or another suitable humectant when recommended.
3. Add the dispersion slowly to water with good mixing.
4. Allow sufficient time for complete hydration.
5. Avoid adding the powder directly to a finished thick emulsion unless the supplier specifically recommends it.
6. Monitor viscosity after the ingredient has fully hydrated.

Some beta-glucans tolerate heating, while others should be added below a specified temperature. One oat beta-glucan ingredient is described as cold-water soluble and recommended at 1%, with supplier guidelines specifying its compatible temperature and pH ranges.

Do not assume that processing instructions for one beta-glucan apply to every grade.

Which Ingredient Is Better for Sensitive Skin?

Neither ingredient is universally better. They address different formulation needs.

Choose Bisabolol When You Want:

• Targeted soothing activity
• Help reducing the appearance of redness
• A non-tacky active
• An oil-soluble ingredient
• Minimal change to viscosity
• A light moisturizer or serum
• An after-sun, after-shave, or post-depilation product
• Support for a formula containing potentially irritating actives

Choose Beta-Glucan When You Want:

• Increased hydration
• Skin-barrier support
• A soft, conditioned after-feel
• Protective film formation
• A more cushioned emulsion
• Support for dry, dehydrated, or compromised skin
• A water-soluble active
• A soothing active for serums, gels, creams, or masks

Can Bisabolol and Beta-Glucan Be Used Together?

Yes. Bisabolol and beta-glucan can complement each other especially well in sensitive-skin emulsions.

Bisabolol contributes oil-soluble soothing and skin-conditioning activity, while beta-glucan contributes water-phase hydration, film formation, and barrier support.

A sensitive-skin moisturizer might contain:

• Bisabolol: 0.2–0.5%
• Beta-glucan: supplier-recommended level
• A gentle emulsifier
• Lightweight plant oils
• Squalane or other stable vegan emollients
• Glycerin or propanediol
• Barrier-supporting lipids
• A carefully selected preservative system
• No fragrance or a very low fragrance level

The inclusion of soothing actives does not guarantee that a finished product will be suitable for sensitive skin. The emulsifier, preservative, fragrance, essential oils, surfactants, pH, packaging, and manufacturing process all influence the product’s tolerability.

Important Formulation Considerations

Before adding either ingredient, confirm:

• The exact INCI name
• Natural or synthetic origin
• Percentage of active material
• Carrier ingredients
• Preservative system
• Recommended pH range
• Temperature limitations
• Solubility
• Vegan status
• Allergen documentation
• Natural Origin Index
• COSMOS or organic certification status

Sensitive-skin products should also undergo appropriate stability testing, preservative efficacy testing, packaging compatibility testing, and finished-product safety evaluation.

Final Comparison

Bisabolol is an excellent choice when you want a lightweight, non-tacky soothing active that works within the oil portion of an emulsion. It can help calm the appearance of irritated or reddened skin without adding a heavy film or noticeably changing the product’s texture.

Beta-glucan is the stronger choice when hydration, barrier support, and a soft protective skin feel are primary goals. It can make an emulsion feel more conditioning and comforting, although the wrong grade or excessive concentration may create tackiness.

For a well-rounded sensitive-skin moisturizer, the two ingredients may be used together. Bisabolol helps address skin comfort and visible redness, while beta-glucan supports hydration and the moisture barrier.

The best results come from selecting the correct commercial grades, following the supplier’s recommended processing instructions, and evaluating the performance of the complete formulation rather than focusing on a single featured ingredient.