Ingredient · Soothing and Moisturising Polysaccharide
Beta-Glucan
INCI · Beta-Glucan
Related names and forms: Sodium Carboxymethyl Beta-Glucan. This list does not indicate synonyms or exact ingredient matches.
Beta-glucan (INCI: Beta-Glucan) is a polysaccharide obtained from oats, yeast, mushrooms and other sources. It is not a single fixed molecule, but a polymer whose chain length and branching vary with source and production. It is used in formulas associated with soothing properties and a moisturised, comfortable-looking surface. Its high-molecular-weight structure works largely at the surface; water binding and a thin film contribute to a full-looking, moist feel. Labels may show 'Beta-Glucan' or its derivative 'Sodium Carboxymethyl Beta-Glucan'. As a variable-structure polymer, it has no single INCI-equivalent compound CID in PubChem. Although name/Beta-glucan resolves to an idealised repeat-unit record (CID 439262), this is not an individual equivalent of the cosmetic polymer with variable chain length and branching. It is therefore not used as a keyReference; the reference framework is provided through evidenceNotes.
i. Cosmetic Functions
Frequently Discussed Effects
The following headings summarise areas of effect frequently discussed in the literature; visible results in each area require regular use and a suitable formula.
A Soothing Feel
A polysaccharide associated with claims of a comfortable appearance for sensitive and redness-prone profiles.
A Moisturising Film
Its tendency to bind water and leave a thin surface film contributes to a moist, full-looking feel.
Barrier-Friendly Context
Common in simple, barrier-focused formulas for sensitive skin.
Mechanism
What Happens Within the Skin?
The following points summarise mechanisms from dermocosmetic literature in plain English. Klaris presents them as background information to help readers understand the context, not as medical claims.
Step 1
Polysaccharide (Polymer)
Not one fixed molecule, but a polymer with chain length and branching that vary with source and production.
Step 2
A Range of Sources
Obtained from oats, yeast, mushrooms and other sources; source and structure affect behaviour.
Step 3
A Moisturising Surface Film
Water binding and a thin surface film contribute to a full-looking, moist feel.
Step 4
A Soothing Feel
Associated with claims of a comfortable appearance for sensitive and redness-prone profiles.
Step 5
High Molecular Weight, Mainly Surface Action
Its high-molecular-weight structure works largely at the surface; expectations of deep penetration are structurally limited.
ii. Role in the Formula
How Is It Read on a Label?
Beta-glucan is used at low doses as a soothing and moisture helper in water-based serums, creams and masks. Its high-molecular-weight structure works largely at the surface, and it is often formulated with humectants such as hyaluronic acid.
A Closer Look · pH, Stability, Synergy
Beta-glucan is a polysaccharide used at low doses as a soothing and moisture helper in water-based serums, creams and masks, often with humectants such as hyaluronic acid. Structurally, it is not one fixed molecule, but a polymer whose chain length and branching vary with source (oats, yeast or mushrooms) and production. 'Beta-glucan' therefore describes a family, not one defined structure, and there is no single INCI-equivalent PubChem record: an idealised repeat-unit record does not represent the variable polymer. Its high-molecular-weight structure works largely at the surface, binding water and leaving a thin film that contributes to a full-looking, moist feel. This surface-focused behaviour is assessed in terms of surface comfort rather than expectations of deep penetration. Oral or medical discussions of beta-glucan, including immunity, are not equated with topical cosmetic use; these are different routes and contexts. Generally described as low-irritation, it may be more measured for sensitive profiles to observe a new product on a small area first. Klaris considers source and structure, accompanying humectants and the complete formula together.
Typical Concentration Range
Low dose (generally 0.1% - 2%)
Ingredient Family
Soothing Ingredients
iii. Sensitivity Advisory
A Note on Extra Care in Context
Generally described as low-irritation; patch testing a new product is a measured approach for sensitive profiles.
A sensitivity advisory is not an instruction for use; where individual health circumstances, pregnancy or known sensitivities are involved, discussing the decision with your doctor may be a more contextual approach.
Common Misconceptions
Frequently Confused Points
Common Belief
Beta-glucan is one defined molecule.
A More Contextual Reading
It is a polymer whose chain length and branching vary with source and production. 'Beta-glucan' describes a family, not one structure, so it has no single INCI-equivalent CID.
Common Belief
Topical beta-glucan strengthens immunity or heals wounds.
A More Contextual Reading
Oral or medical discussions are not equated with topical cosmetic use. In cosmetics, beta-glucan is associated with surface moisture and comfort, not a treatment claim.
Common Belief
Its high molecular weight means it penetrates deeply.
A More Contextual Reading
High-molecular-weight beta-glucan works largely at the surface. Its contribution is surface moisture and comfort; deep penetration is structurally limited.
Common Belief
Because it is naturally sourced, all forms are the same and suit every skin.
A More Contextual Reading
Source and structure, including molecular weight and branching, affect behaviour. 'Natural' does not automatically mean suitable; the whole formula and individual sensitivity matter.
Scientific Basis
Sources and Their Scope
The following headings indicate areas of research; they are not citations of a specific publication or confirmation that every statement on this page has been verified. The links provided should be read with their individual scope in mind.
- International INCI / CosIng database
- Dermocosmetic research publications
- Literature evaluating sensitive profiles
Starting Points for Independent Research
These links lead to official databases and serve as starting points for searches.
v. Soothing Ingredients Family
Other Ingredients in the Same Family
Explore ingredients in the same functional family to deepen your reading of formulas.
vi. Academy · Related Reading
For a Closer Look
Klaris · Example Analyses
How Does Beta-Glucan Feature
in Your Products?
Explore product examples to see the ingredient list, general assessment and match score that changes with the example profile together.
Masked products and example profiles, not a personal analysis. Profile matching in the app is part of Klaris Premium. The app is currently available in Turkish. An English version is in preparation.