Your Scalp Microbiome: The Invisible World That Controls Your Hair Growth
- Vihira™ null
- May 8
- 2 min read
Your scalp is not just skin with hair growing out of it. It is a living ecosystem hosting trillions of bacteria, fungi, and microorganisms that play a direct role in whether your hair grows or falls. When this microbiome is in balance, hair grows healthily. When it is disrupted — by chemicals, antibiotics, stress, or harsh products — hair fall follows.
What the Scalp Microbiome Does for Your Hair
A healthy scalp microbiome maintains the ideal pH (4.5 to 5.5) that hair follicles need to function optimally
Beneficial bacteria on the scalp suppress harmful fungal overgrowth (like Malassezia that causes dandruff)
The microbiome produces protective compounds that reduce scalp inflammation — chronic inflammation is one of the top causes of hair fall
Harsh chemicals in shampoos (SLS) and hair oils (mineral oil, silicones) wipe out beneficial bacteria, allowing harmful fungi to take over
Once disrupted, the microbiome takes 4 to 6 weeks to restore — meanwhile inflammation and hair fall increase
How to Restore and Maintain Your Scalp Microbiome
Stop using SLS shampoos and synthetic chemical hair products immediately — they are the primary microbiome disruptors
Switch to a 100% chemical-free, plant-based hair oil — bio-active plant compounds support beneficial scalp bacteria
Wash hair every 2 to 3 days — over-washing strips the scalp of the lipids that beneficial bacteria need to thrive
Never use hot water — hot water strips the scalp oil layer and raises pH, creating conditions for harmful fungal growth
Do a weekly diluted apple cider vinegar rinse to restore scalp pH after washing
Give your scalp microbiome 6 to 8 weeks to fully rebalance — patience is essential
Frequently Asked Questions
What pH should the scalp be for healthy hair growth?
The ideal scalp pH is between 4.5 and 5.5 (slightly acidic). Most shampoos are alkaline (pH 8 to 10) which disrupts the scalp microbiome and raises hair fall. Using chemical-free products and ACV rinses helps maintain the correct acidic pH.
Can probiotics help with hair fall?
Emerging research shows oral probiotics can improve scalp health by reducing systemic inflammation and supporting the gut-skin-scalp axis. While not a replacement for scalp care, probiotics are a useful addition to a complete hair recovery routine.
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