Hair loss and thinning affect millions of people worldwide, leading many to search for treatments that support healthier hair growth.

While Hyperbaric Oxygen Therapy (HBOT) has traditionally been associated with wound healing, recovery, and tissue repair, emerging research is beginning to explore its potential role in hair health.

A preliminary study from South Korea, titled Preliminary Effects of Hyperbaric Oxygen Therapy on Hair Follicle Characteristics in Healthy Subjects; Lee et al, 2026, investigated whether HBOT could positively influence hair follicle health in individuals without underlying disease.

Although this was an early pilot study with a small number of participants, the findings offer an interesting glimpse into how oxygen delivery may influence one of the body's most metabolically active tissues - the hair follicle.

Why Hair Follicles Need Oxygen

Hair follicles are incredibly active structures.  During the growth (anagen) phase, follicle cells divide rapidly, requiring significant amounts of energy to produce new hair shafts.

That energy is generated inside mitochondria through aerobic metabolism, making oxygen a critical ingredient for healthy follicle function.

If oxygen delivery to the scalp is compromised - whether through ageing, poor circulation, inflammation, or other factors - the energy available to the follicle may also decline.

HBOT works by increasing atmospheric pressure while breathing concentrated oxygen, allowing oxygen to dissolve directly into the blood plasma.  This significantly increases the amount of oxygen available to tissues, even in areas where circulation may be less than optimal.

What Did the Study Find?

Researchers evaluated healthy adults before and after a course of HBOT, measuring several characteristics of their hair follicles.

Nine healthy volunteers completed 50 HBOT sessions over 3 months at 2.0 ata, 100% oxygen, 90 minute sessions.

The study reported improvements in:

• Hair shaft thickness

• Hair follicle density

• The proportion of hairs in the active growth (anagen) phase

• Overall follicle characteristics associated with healthier hair growth

Importantly, participants were healthy individuals rather than people receiving treatment for significant hair loss, making the findings particularly interesting from a preventative and wellness perspective.

How Might HBOT Influence Hair Growth?

The researchers proposed several biological mechanisms that may explain these changes.

Enhanced Oxygen Delivery

HBOT dramatically increases tissue oxygen availability, helping support the high metabolic demands of actively growing hair follicles.

Improved Cellular Energy Production

Hair-producing cells rely heavily on ATP - the body's energy currency - to divide and create new hair.  Greater oxygen availability allows mitochondria to produce ATP more efficiently.

Angiogenesis

HBOT has been shown in numerous studies to stimulate angiogenesis, the formation of new blood vessels.  A richer microvascular network may improve long-term nutrient and oxygen delivery to scalp tissues.

Reduced Inflammation

Chronic low-grade inflammation is increasingly recognised as one contributor to several forms of hair loss.  HBOT has demonstrated anti-inflammatory effects in a variety of tissues, potentially creating a healthier environment for follicles.

Cellular Signalling

HBOT creates controlled oxidative stress that activates repair pathways throughout the body.  This hormetic response can stimulate genes involved in tissue maintenance, healing and regeneration.

What Does This Mean?

The Korean study does not prove that HBOT is a treatment for hair loss.

Instead, it suggests that increasing tissue oxygenation may positively influence the biological environment that supports healthy hair follicles.

As with many applications of HBOT, the therapy works by optimising the body's own physiology rather than directly 'forcing' hair growth.

For individuals experiencing hair thinning, HBOT may become one component of a broader strategy that also addresses nutrition, hormones, inflammation, stress, circulation, and scalp health.

The Bigger Picture

One of the most fascinating aspects of Hyperbaric Oxygen Therapy is that it does not target a single organ.

Instead, HBOT enhances one of the body's most fundamental requirements - oxygen availability.

When cells receive more oxygen under pressure, they are better able to produce energy, repair tissue, regulate inflammation and support regeneration.  Hair follicles, being among the most metabolically active tissues in the body, may simply be another example of where improved oxygen delivery can make a measurable difference.

Looking Ahead

The Korean study is an encouraging first step, but much larger clinical trials are needed before HBOT can be recommended specifically for hair restoration.

Future research will help determine:

• Which type of hair loss responds best

• The ideal treatment pressure and session length and frequency

• Whether HBOT works best alongside existing hair restoration therapies

• How long benefits may last

As our understanding of oxygen biology continues to evolve, the relationship between cellular oxygenation and hair health is becoming an exciting area of investigation.

At Hyperbaric Health, we continue to follow the latest scientific research into the many ways Hyperbaric Oxygen Therapy supports human physiology.  

While HBOT is not a standalone treatment for hair loss, studies such as this highlight the growing appreciation that healthy cells - including those within hair follicles - depend on adequate oxygen to function at their best.

- Samantha Winters