Microbiome of the Scalp: Hidden Ecosystem Influencing Hair Health
Learn how scalp bacteria and fungi affect inflammation, dandruff, and overall follicle balance.
The human scalp hosts billions of microorganisms — bacteria, fungi, and mites — that play surprising roles in hair and skin health. This study mapped the “scalp microbiome” and found distinct microbial imbalances in individuals experiencing hair loss.
- Healthy scalps show high diversity of Cutibacterium and Staphylococcus species.
- Overgrowth of Malassezia globosa correlates with dandruff and inflammation.
- Hair loss patients had reduced microbial diversity and increased oxidative stress.
- Restoring microbial balance improved scalp pH and barrier function.
This research reframes hair loss as an ecological issue — not just hormonal or genetic. Treatments that rebalance the scalp microbiome may support hair restoration and overall skin resilience.
Causality remains unclear: it’s not certain if microbial imbalance causes hair loss or vice versa.
Probiotic scalp serums and microbiome-friendly shampoos are emerging as potential interventions.
Citation & Review Team
Full Citation
Huang L. et al., Cell Reports Medicine, 2023.Review Team
Author: Student Editor
Fact-Checker: Dermatology Researcher
Disclaimer
This article is for educational purposes only and not a substitute for professional medical advice.