Scars are a bit like fingerprints: no two are quite the same, and their story depends on your skin, your health, and the injury or surgery that came before. If you’ve ever wondered why one person’s scar settles quietly while another’s stays red, raised, tight, or uncomfortable for months, you’re not imagining things—scar remodelling is a complex biological process influenced by blood flow, oxygen availability, inflammation, and mechanical tension.

Hyperbaric Oxygen Therapy (HBOT) is increasingly discussed as a supportive option during recovery, particularly where tissues have had a tough time healing. But what does HBOT actually do, who might benefit, and how does it fit alongside the scar-care basics that really matter (like silicone, sun protection, and massage)? This guide walks you through the science in plain English, sets realistic expectations, and gives you practical next steps—so you can make informed choices and feel more in control of your recovery.

Scar healing 101: what your body is trying to do

Scar formation is not a failure of healing—it’s the normal way your body closes and reinforces a wound. The goal is stability first, then refinement. Broadly, healing moves through overlapping phases:

1) Inflammation (days)

Your immune system clears debris and signals for repair. Swelling, warmth, and redness can be normal early on. Too much inflammation for too long can increase the risk of thicker, more symptomatic scarring.

2) Proliferation (weeks)

Your body lays down new tissue (including collagen) and builds new micro-blood vessels (angiogenesis). This is when wounds “knit” together and strength improves, but the tissue can look red or pink.

3) Remodelling (months to 18+ months)

Collagen fibres reorganise and the scar gradually becomes flatter, softer, and paler for many people. This stage is slow and strongly influenced by:

• Oxygen supply to healing tissue
• Circulation and microvascular health
• Mechanical tension (pulling across the scar line)
• Genetics and skin type
• Location (chest and shoulders often scar more aggressively)
• Infection or delayed wound closure

When oxygen delivery is suboptimal—due to swelling, compromised circulation, or tissue injury—healing can stall. That’s one reason HBOT is sometimes considered as part of a broader recovery plan.

What is HBOT, exactly?

HBOT involves breathing high-concentration oxygen while inside a pressurised chamber. Under pressure, more oxygen dissolves into your plasma (the liquid part of blood), increasing oxygen availability to tissues—even where circulation is sluggish.

In clinical practice, HBOT has established uses for specific medical indications (for example, certain non-healing wounds, radiation-related tissue injury, or compromised grafts/flaps). In scar recovery support, HBOT is generally discussed as a way to optimise the environment in which healing and remodelling take place—rather than as a stand-alone “scar eraser”.

How HBOT may support scar recovery

Depending on your situation, HBOT may support recovery via several plausible mechanisms:

• Improved tissue oxygenation: Oxygen is essential for collagen synthesis, angiogenesis, and immune function.
• Support for microcirculation: HBOT can increase oxygen diffusion into tissues and may assist healing where perfusion is borderline.
• Inflammation modulation: HBOT has been studied for effects on inflammatory signalling; responses vary and context matters.
• Reduced oedema (swelling): In some scenarios, hyperbaric oxygen can help reduce tissue swelling, which may improve local blood flow.

It’s important to note that the quality and applicability of evidence depends on the scar type and the clinical context. Stronger evidence exists for wound-healing support in compromised tissue than for cosmetic improvement of mature scars.

Which scars might HBOT be most relevant for?

Not all scars require advanced therapies. Many settle well with time and consistent basics. HBOT is typically most relevant when scarring is connected to challenging healing conditions.

HBOT may be considered as supportive care when:

• Healing has been delayed (the wound took longer than expected to close or has repeatedly broken down)
• Tissue oxygenation may be compromised (e.g., poor local circulation, significant swelling, or complex surgical sites)
• There’s a history of problem healing (previous wounds that struggled, or risk factors that affect microvascular function)
• Post-surgical recovery involved grafts/flaps (in appropriate clinical contexts, under medical guidance)
• Radiation-affected tissues are involved (this is a more specialised area and requires careful medical oversight)

HBOT is less likely to be the first choice when:

• The scar is mature and stable (older scars are often better addressed with targeted dermatological or laser approaches)
• The main goal is purely cosmetic refinement without functional symptoms (colour, texture, or mild unevenness)
• You can achieve your goal with lower-burden basics (silicone, massage, sun protection, time)

If your scar is raised, itchy, or expanding beyond the original wound edges (suggestive of hypertrophic scarring or keloid tendency), it’s worth discussing early with a clinician. Those scar types often need a specific plan (for example, silicone and pressure strategies, steroid injections, or other dermatology-led options) and HBOT may not be the primary tool.

Timing: when HBOT might be most useful

In general, supportive interventions for healing are most impactful when they align with the biology of repair—often earlier rather than later. HBOT, where clinically appropriate, is more commonly considered:

• In the early healing window after surgery or injury, especially if there are risk factors for delayed healing
• When a wound shows signs of struggling (under medical supervision)
• During recovery from complex procedures where tissue viability is a concern

For established scars months or years down the line, HBOT may still be explored in some cases, but expectations should be conservative. Remodelling can continue for a long time, yet the “highest leverage” period is typically earlier in recovery.

What a HBOT course can look like

Protocols vary based on goals, clinical indications, and local practice. Sessions typically last around 60–90 minutes, and a course may involve multiple sessions over several weeks. Consistency matters; benefits, where they occur, are usually cumulative rather than instant.

What you may feel during a session

• Pressure changes in the ears (similar to flying); you’ll be guided on clearing techniques
• Relaxation or mild fatigue afterwards for some people
• Warmth or a sense of stillness, as the session is typically calm and quiet

You should be screened for suitability beforehand. Safety is central with any pressurised therapy.

Safety, suitability, and who should be cautious

HBOT is generally well-tolerated when appropriately prescribed and supervised, but it isn’t for everyone. A proper clinical screen should cover medical history, current medications, and specific contraindications.

Common considerations include:

• Ear or sinus issues that make pressure equalisation difficult
• Untreated pneumothorax (a key contraindication)
• Certain lung conditions requiring specialist sign-off
• Seizure disorders (requires careful assessment)
• Claustrophobia (many people do fine with support, but it should be discussed)

If you’re pregnant, have complex medical conditions, or are recovering from a significant surgery, HBOT should only be considered with clear medical guidance and coordination with your surgical or clinical team.

The “scar basics” still matter most (and they’re evidence-based)

Think of HBOT as a potential amplifier in the right context—not a replacement for foundational scar care. These are the practical steps that consistently make a difference for many people.

1) Protect from UV exposure

UV can prolong redness and lead to long-lasting pigmentation changes. For scars exposed to daylight:

• Use a broad-spectrum SPF 50 daily once the skin is closed and intact
• Cover with clothing or a physical barrier where practical
• Be especially vigilant for the first 6–12 months

2) Consider silicone (gel or sheets)

Silicone is one of the best-supported topical options for helping scars stay flatter and less symptomatic. It may help with hydration and barrier function, which can influence remodelling.

• Use on fully closed wounds only
• Commit to daily use for at least 8–12 weeks (often longer)
• Choose a format you’ll actually stick with (gel for convenience, sheets for coverage)

3) Gentle scar massage and mobilisation

Once your clinician confirms it’s safe (typically after the wound has closed and tenderness is settling), massage may help reduce tightness and improve pliability.

• Start gently, 1–2 minutes, 1–2 times daily
• Use a simple, fragrance-free moisturiser to reduce friction
• Stop if you see cracking, bleeding, or increased pain

4) Manage mechanical tension

Scars that are constantly pulled can widen or stay more inflamed. Practical options include:

• Using paper tape or silicone sheets to reduce tension (where advised)
• Progressing exercise gradually after surgery
• Working with a physiotherapist for areas like shoulder, chest, abdomen, and knee

5) Support healing from the inside: sleep, protein, and micronutrients

You don’t need an overflowing supplement shelf. Focus on fundamentals:

• Sleep: aim for regular, high-quality sleep—repair is hormonally supported at night
• Protein: include a quality protein source at each meal to support tissue rebuilding
• Colour and variety: fruit and vegetables supply vitamin C and polyphenols that support collagen formation and oxidative balance
• Hydration: supports circulation and skin function

If you suspect deficiencies (iron, vitamin D, B12, zinc), consider testing rather than guessing—targeted correction is more effective and safer.

HBOT vs other scar-support options: how to choose

Scar management is rarely one-size-fits-all. Here’s how HBOT typically sits among other options:

For early recovery and healing support

• Best foundations: wound care, infection prevention, nutrition, sleep, silicone (when closed)
• Adjuncts: HBOT may be considered if healing is compromised or risk is high

For raised, itchy, or thickening scars

• Common pathways: silicone/pressure strategies, steroid injections, specialist review
• Adjuncts: HBOT may be secondary depending on tissue health and clinician assessment

For colour and texture once the scar is stable

• Common pathways: laser/light therapies, microneedling (in appropriate cases), topical pigment support, time and sun protection
• Adjuncts: HBOT is less central here unless healing capacity is a limiting factor

A sensible plan often blends: (1) protecting the scar, (2) improving how it behaves (tightness/itch), and (3) refining appearance later if needed.

A realistic expectations checklist

When people feel disappointed by scar treatments, it’s often because expectations were set for “scar removal”. A better goal is “scar improvement” and “better function”. Consider these more realistic markers of progress:

• Less redness and heat over time
• Reduced itch or sensitivity
• Improved softness and flexibility
• Less tightness with movement
• Gradual blending of texture with surrounding skin

Progress is often non-linear—good weeks and more irritable weeks can alternate, especially as you increase activity or as weather and hormones change.

Your HBOT for scar recovery support guide: action steps

If you like a clear plan, start here. This is a practical, low-fuss framework you can adapt with your clinician.

Step 1: Identify your scar type and stage

1. Fresh healing wound (not fully closed): prioritise medical wound care and protect the area.
2. Early scar (closed, pink/red): focus on silicone, sun protection, gentle massage, and tension management.
3. Maturing scar (months in, changing slowly): continue basics; consider specialist interventions if symptoms persist.

Step 2: Screen for “healing headwinds”

These factors can slow healing and may make supportive therapies more relevant:

• Smoking or nicotine use
• Diabetes or impaired glucose regulation
• Low protein intake or low appetite post-op
• High stress and poor sleep
• History of delayed healing or infection

If any apply, address them early and proactively. Small changes here often outperform expensive add-ons.

Step 3: Discuss HBOT if healing is compromised or risk is high

Bring specific questions to a consultation:

• What is the clinical goal in my case—tissue support, symptom reduction, or overall recovery?
• How will we measure progress (pain, wound closure, function, photos)?
• How many sessions are recommended, and why?
• What are the safety considerations for my medical history?

Step 4: Combine HBOT with a scar routine you can stick to

Consistency beats intensity. A simple weekly rhythm might include:

• Daily: SPF, silicone (if suitable), brief massage/mobilisation
• 3–4x weekly: progressive movement/physio plan to reduce stiffness
• Weekly: take photos in the same lighting to track subtle changes

How LIVBETTER approaches recovery support

At LIVBETTER, we’re interested in outcomes that matter in real life: less discomfort, smoother recovery, and getting you back to moving and thinking well—without turning wellness into a second job. Where appropriate, HBOT can be one part of an integrated recovery approach alongside evidence-based scar care, targeted nutrition support, and other advanced therapies designed to support resilience and tissue recovery.

If you’re considering HBOT for scar recovery support, the most helpful first step is a proper assessment of your healing stage, medical history, and goals. That allows us to advise whether HBOT is likely to be worthwhile for you—or whether a simpler, more targeted plan would deliver better value and results.

Frequently asked questions

Can HBOT remove scars?

HBOT is not a scar-removal treatment. It may support the healing environment in certain contexts, which can contribute to better recovery. Scar appearance and symptoms are influenced by many factors, and improvement is usually gradual.

How soon after surgery can I start thinking about HBOT?

This depends on the procedure, wound status, and your clinician’s guidance. In situations where HBOT is indicated for healing support, it’s often considered earlier rather than later—but suitability must be assessed individually.

Is HBOT worth it if my scar is mainly cosmetic?

If your scar is fully healed and your main concern is colour or texture, other modalities (and time) may be more direct. HBOT may be more relevant when healing capacity is compromised or symptoms suggest the tissue needs additional support.

What else should I do alongside HBOT?

Prioritise scar fundamentals: sun protection, silicone (when appropriate), gentle mobilisation, good sleep, and adequate protein. If your scar is thickening or highly symptomatic, seek early specialist guidance.

Key takeaways

• Scar remodelling is a long process; improvement often continues for many months.
• HBOT increases oxygen availability and may support recovery when healing is challenged.
• HBOT is best viewed as an adjunct in the right context, not a stand-alone fix.
• Silicone, SPF, gentle massage, and tension management remain the everyday essentials.
• Start with an assessment and a plan that matches your scar type, stage, and goals.

Next Steps

Want to learn more? Check out these articles:

HBOT for Sports Injury Recovery: A Practical Guide 2

HBOT for Dental Implant Recovery: Your Complete Guide

HBOT for Wellness Recovery in Active Adults: A Practical Guide

Check out our Therapies to see which options fit your goals.