Alpha-Glucan Oligosaccharide is a glucose oligomer that exhibits a degree of polymerization ranging from 2 to 10. It is prepared by the action of a Leuconostoc mesenteroides glucosyl transferase on sucrose. The α-D-glucopyranose monomers in Alpha-Glucan Oligosaccharide are linked by (1-2), (1-6), and (1-4) bonds, contributing to its unique structure and beneficial properties.

Chemical Composition and Structure
Alpha-Glucan Oligosaccharide is composed of glucose units (α-D-glucopyranose) linked together in a specific pattern:

Degree of Polymerization: Ranges from 2 to 10 glucose units.
Linkages: The glucose monomers are connected by (1-2), (1-6), and (1-4) glycosidic bonds.
Physical Properties
Alpha-Glucan Oligosaccharide typically appears as a white to off-white powder. It is soluble in water, making it suitable for inclusion in various cosmetic and personal care formulations. The oligosaccharide has a mild, neutral taste and odor.

Cosmetic and Personal Care Applications
Prebiotic: Supports the growth of beneficial skin microbiota, promoting a balanced and healthy skin microbiome.

Moisturizing: Enhances the skin’s ability to retain moisture, providing long-lasting hydration.

Skin Conditioning: Improves the texture and appearance of the skin, making it softer and smoother.

Soothing: Exhibits anti-inflammatory properties that help to soothe and calm irritated skin.

Protective: Forms a protective barrier on the skin, shielding it from environmental stressors.

Environmental and Safety Considerations

Alpha-Glucan Oligosaccharide is generally considered safe for use in cosmetic and personal care products when used within recommended concentrations. It is biodegradable and environmentally friendly. The production process, involving microbial fermentation, is sustainable and has a minimal environmental impact.

Cosmetics - INCI Functions


Cleansing agent. Ingredient that cleanses skin without exploiting the surface-active properties that produce a lowering of the surface tension of the stratum corneum.

Skin conditioning agent. It is the mainstay of topical skin treatment as it has the function of restoring, increasing or improving skin tolerance to external factors, including melanocyte tolerance. The most important function of the conditioning agent is to prevent skin dehydration, but the subject is rather complex and involves emollients and humectants that can be added in the formulation.

Smoothing. The function of this component is to make the surface of the skin more even, reducing roughness and irregularities.
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