Prebiotics

INCI: Inulin, Fructooligosaccharides (FOS), Galactooligosaccharides (GOS) (varies by formulation)
Category: Microbiome-support nutrient
Used in: Supplements, skincare
Typical Usage Level (Oral Supplements):
2–5 g per day depending on formulation

What This Ingredient Does

Prebiotics are non-digestible fibers that act as food for beneficial gut bacteria. By supporting the growth and activity of these microorganisms, they help maintain a balanced gut microbiome.

A healthy gut microbiome plays a role in regulating inflammation and immune responses, which can influence skin health through the gut–skin axis. Prebiotics are often used alongside probiotics to improve microbial balance and overall gut function.

In skincare, prebiotics may also help support the skin microbiome, contributing to better barrier function and reduced sensitivity.

Key Benefits

• Supports growth of beneficial gut bacteria

• Helps maintain microbiome balance

• Supports digestive and immune function

• Contributes to skin health via the gut–skin axis

Who It’s Best For

• Individuals with gut imbalance

• People experiencing digestive issues

• Acne-prone or sensitive skin

• Those using probiotics for gut health

Clinical Note by Dr. Su

M.D. Dermatologist

Prebiotics help support the effectiveness of probiotics by providing nutrients for beneficial bacteria. They are most effective when used consistently as part of a gut health-focused approach.

References

1. Nutrients (2024)
   Prebiotics and their role in gut microbiome modulation
   https://pubmed.ncbi.nlm.nih.gov/38732060/

2. PMC Review Article (2019)
   Prebiotics, probiotics, and their role in human health
   https://pmc.ncbi.nlm.nih.gov/articles/PMC6463098/

3. Recent Review (2024)
   Impact of prebiotics on gut microbiota and systemic health
   https://pubmed.ncbi.nlm.nih.gov/39599742/