Alpha Glucan Oligosaccharide



Alpha Glucan Oligosaccharide at a glance

  • Natural prebiotic typically synthesized from sugars
  • Helps support a healthy microbiome
  • Can reduce signs of sensitive skin
  • Antioxidant benefits reduce the impact of environmental stressors

Alpha Glucan Oligosaccharide description

Alpha-glucan oligosaccharide is a natural prebiotic that helps support a healthy microbiome. When skin’s microbiome (it’s invisible barrier) is disrupted, the population of harmful bacteria can grow since it’s not being kept in check by healthy flora on the surface. This has the potential to trigger signs of irritation and sensitized skin. Alpha and beta-glucan oligosaccharides also have antioxidant benefit, helping to reduce the visible effects of oxidative stress on skin. Recommended usage levels of alpha-glucan oligosaccharide in skin care range from 0.25–3% on its own and 0.5–3% when part of a blend with other prebiotics.

Alpha Glucan Oligosaccharide references

  • Journal of Personalized Medicine, August 2020, pages 1–14
  • International Journal of Biological Macromolecules, June 2020, pages 600–607
  • Journal of Dermatological Treatment, July 2016, pages 173–180
  • International Journal of Cosmetic Science, August 2009, pages 271–277

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not Rated