Does Hyperbaric Oxygen Therapy Reverse Aging? What the Skin and Telomere Studies Actually Show

Hyperbaric oxygen therapy (HBOT) means breathing 100% oxygen inside a chamber pressurized above normal air pressure. Wellness centers and med spas now sell it as an anti-aging and skin treatment. The short answer: HBOT is a proven medical treatment for specific conditions such as decompression sickness, carbon monoxide poisoning and non-healing diabetic foot ulcers, but it is not an established anti-aging or wrinkle treatment. The headline "age reversal" studies come from one research group, involved small groups of older adults, had no placebo group and did not measure visible wrinkles. Independent reviews call the aesthetic evidence limited and at high risk of bias.

The short answer

The FDA has cleared hyperbaric chambers for 13 conditions, including severe burns, radiation injury, skin grafts at risk and diabetic foot ulcers. Aging and wrinkles are not on the list (FDA: Hyperbaric Oxygen Therapy: Get the Facts).
In a 2020 trial, 60 daily sessions lengthened telomeres in several immune cell types by over 20% in adults aged 64 and older, but there was no control group (Hachmo et al., Aging, 2020).
A 2021 skin biopsy study in 13 men (average age 68) found more collagen density and longer elastic fibers after 60 sessions, but the skin's appearance was not scored (Hachmo et al., Aging, 2021).
A 2024 evidence review of 17 human studies (766 participants) rated every study at high risk of bias (Parnis et al., J Cosmet Dermatol, 2024).
Risks include ear and sinus pain, eardrum rupture, temporary vision changes, rare lung collapse and fire. The FDA advises treatment only at facilities accredited by the Undersea and Hyperbaric Medical Society (UHMS).

What HBOT is and why people link it to aging

Normal air is 21% oxygen. In HBOT you breathe pure oxygen at higher pressure, which lets your blood carry much more dissolved oxygen to tissues. That extra oxygen helps wounds heal and fights certain infections, which is why hospitals use it for problem wounds and radiation damage (FDA).

The anti-aging idea is called the "hyperoxic-hypoxic paradox." Researchers propose that repeated swings between very high oxygen and normal oxygen trigger some of the same repair signals the body uses when oxygen is low, such as new blood vessel growth and stem cell activity. A 2022 review of HBOT and healthy aging describes these mechanisms but notes key questions remain open (Fu et al., Redox Biology, 2022).

The telomere study

Telomeres are protective caps on chromosomes that shorten as cells divide. We explain them in telomeres and aging.

In the 2020 Tel Aviv study, 35 healthy, independently living adults aged 64 and older were enrolled to get 60 daily HBOT sessions (Hachmo et al., 2020). The authors reported:

Telomere length in T helper, T cytotoxic, natural killer and B cells rose by over 20%.
B cells showed the largest change, up 37.63% (±52.73) one to two weeks after the last session.
Senescent T helper cells fell by 37.30% after treatment.

Why it is not proof of age reversal

No control group. Every participant got HBOT, so normal variation can't be ruled out.
Small analyzed groups. Of 30 people who finished, 4 were excluded from the telomere analysis and 10 from the senescent cell analysis because of sample problems.
Blood cells only. Telomere length in immune cells is a biomarker, not a measure of how old your skin looks or how long you'll live.
Marker questions. An independent review points out the study didn't measure CD57, considered the most reliable marker of T-cell senescence, which complicates interpreting the results (Fu et al., 2022).

The skin biopsy study

The same research group took skin biopsies from 13 men from the larger cohort, average age 68.07 (Hachmo et al., 2021). Each man had a three-month period with no treatment, then three months of daily HBOT (60 sessions at 2 atmospheres with air breaks).

After HBOT, the biopsies showed:

Measure	Change after HBOT	Effect size
Collagen density	Increased	1.10
Elastic fiber length	Increased	2.71
Blood vessels	Increased	1.00

Fiber fragmentation and senescent cells also decreased. Elastic fiber density and thickness did not change.

The authors themselves list the limits: a small sample, no separate placebo group, the skin was not evaluated or scored clinically, and photoaging was not assessed. In other words, the study shows changes under a microscope, not fewer wrinkles you can see. All participants were older men, so the results may not apply to women or younger people. For how collagen and elastin shape visible aging, see how collagen works in the skin.

What independent reviews conclude

Two 2024 reviews looked at HBOT across aesthetics and anti-aging:

Parnis et al. reviewed 17 human studies with 766 participants. Three were level II evidence, three level III and eleven level IV, and all were judged at high risk of bias. They found conflicting evidence on how HBOT might help in aesthetics and said randomized trials with longer follow-up are needed (J Cosmet Dermatol, 2024).
A 2024 systematic review screened 591 articles and included 15. It concluded HBOT "may serve a valuable adjunct" in aesthetic surgery and anti-aging, but that the evidence to support its use and justify its cost is limited (PubMed 39733047).

The strongest aesthetic finding is in recovery, not rejuvenation. In one surgical study cited by Parnis et al., HBOT before tummy tuck surgery was linked to fewer complications (8.4% vs 32.6%). That's a wound-healing use, similar to HBOT's approved role for skin grafts at risk.

HBOT vs proven anti-aging treatments

Treatment	Visible wrinkle evidence	Typical commitment
HBOT	Not measured in trials	60 sessions, ~90 min each
Daily sunscreen	Randomized trial evidence	Daily habit
Topical retinoids	Randomized trial evidence	Nightly use

If your goal is visibly younger-looking skin, daily broad-spectrum sunscreen and a retinoid have far stronger evidence at a fraction of the cost. Collagen-building procedures such as microneedling and biostimulator fillers have clinical outcome data on skin quality. For at-home light treatments, see our red light therapy guide.

"Mild" and soft-shell chambers

Many wellness centers and home sellers use soft, zippered chambers that run at low pressure, often with an oxygen concentrator. The trial protocols above used 100% oxygen at 2 atmospheres in a medical chamber, so their results can't be assumed for these devices.

The FDA says it has cleared a zippered bag chamber only to treat altitude sickness. These bags are not cleared for use with oxygen tanks or concentrators, and the FDA warns that people have used them to build homemade HBOT setups, which creates fire and other risks (FDA).

Risks and who should be careful

When used for FDA-cleared conditions at proper facilities, HBOT is generally safe and serious complications are rare. Possible problems include (FDA; Harvard Health):

Ear and sinus pain, and middle ear injury including a ruptured eardrum
Temporary vision changes
Lung collapse (rare)
Oxygen toxicity at high doses
Fire, because of the high oxygen concentration; the FDA notes fires and explosions have occurred in chambers at unaccredited facilities

Talk to your doctor first if you have lung disease, recent ear or sinus surgery, a cold or congestion, seizures, claustrophobia, or you are pregnant. If you choose HBOT, the FDA advises a hospital or a UHMS-accredited facility.

How to evaluate an HBOT anti-aging offer

Ask what pressure and oxygen level are used. Soft chambers at low pressure are not the protocol studied.
Ask about accreditation. Look for UHMS accreditation and a physician supervising treatment.
Be wary of big claims. "Reverses aging," "clears senescent cells" or "adds years to your life" go beyond what the small studies show.
Count the full cost. The studied protocol was 60 sessions over about three months.
Keep your proven basics. HBOT doesn't replace sunscreen, retinoids or treating sun damage.

Frequently asked questions

Does hyperbaric oxygen therapy reduce wrinkles?

No trial has shown that HBOT reduces visible wrinkles. The main skin study found more collagen density and longer elastic fibers in biopsies from 13 older men, but the researchers didn't score the skin's appearance.

Can HBOT really lengthen telomeres?

One uncontrolled 2020 study reported telomere length in immune cells rose by over 20% after 60 sessions in adults aged 64 and older. It hasn't been confirmed by an independent randomized trial, and longer blood-cell telomeres don't prove slower aging.

Is hyperbaric oxygen therapy FDA approved for anti-aging?

No. The FDA has cleared hyperbaric chambers for 13 conditions such as decompression sickness, carbon monoxide poisoning, severe burns and diabetic foot ulcers. Anti-aging and skin rejuvenation are not cleared uses.

How many HBOT sessions were used in the anti-aging studies?

Both the telomere and skin biopsy studies used 60 daily sessions over about three months, with 100% oxygen at 2 atmospheres in a medical chamber.

Is a soft or "mild" hyperbaric chamber the same thing?

No. Soft zippered chambers run at much lower pressure. The FDA has cleared such bags only for altitude sickness and warns against using them with oxygen tanks or concentrators.

Is HBOT safe?

For FDA-cleared uses at accredited facilities, serious complications are rare. Ear and sinus pain are the most common problems; eardrum injury, vision changes, lung collapse and fire are possible. Ask your doctor before starting.

Bottom line

HBOT is a valuable hospital treatment for specific medical problems, and early research on aging biology is interesting. But the anti-aging claims rest on small, uncontrolled studies from one group that measured blood and biopsy markers, not visible skin. Independent reviews rate the evidence as limited and high risk of bias. If you want younger-looking skin, sunscreen, retinoids and proven in-office treatments are better places to spend your money. If you're curious about HBOT, talk to your doctor and use only an accredited facility.

This article is for educational purposes only and is not medical advice. Talk to your doctor or a dermatologist before starting any new treatment, especially if you have a medical condition or take medicines.