Ablative Fractional CO2 Laser improves burn scar flexibility through a process known as fractional photothermolysis, which creates microscopic vertical channels of thermal damage deep into the dermis. By vaporizing columns of abnormal, stiff scar tissue within these specific zones while leaving surrounding tissue intact, the laser triggers a rapid wound-healing response that replaces disorganized collagen with new, flexible fibers.
The laser mechanically breaks down the rigid, chaotic collagen bundles that restrict movement and stimulates the body to rebuild the area with organized, pliable tissue, effectively releasing tension and restoring range of motion.
The Physical Mechanism: Creating Microscopic Treatment Zones
Targeted Vaporization
The core mechanism involves the laser emitting specific wavelengths of light that are absorbed by water molecules within the scar tissue. This energy instantly vaporizes the tissue, creating Microscopic Treatment Zones (MTZs) with diameters of approximately 70-100 microns.
Deep Dermal Penetration
These MTZs are not superficial; they penetrate deep into the dermis, typically reaching depths of 250-800 microns. This depth is critical because it allows the laser to reach the core of the abnormal dermal tissue responsible for the scar's stiffness.
The Fractional Approach
Crucially, the laser only treats a fraction of the skin surface at a time. By leaving bridges of healthy, intact tissue between the vaporized columns, the procedure preserves the skin's structural integrity and allows for rapid healing.
The Biological Response: Remodeling the Scar
Triggering the Healing Cascade
The thermal damage created by the MTZs induces a controlled injury response. This triggers the release of biological markers, including heat shock proteins, which signal the body to begin immediate repair.
Neocollagenesis (New Collagen Production)
In response to the thermal injury, fibroblast cells are activated to produce new collagen. This process, called neocollagenesis, replaces the vaporized scar tissue with fresh, healthy tissue components.
Collagen Reorganization
Burn scars are characterized by disorganized, clumped collagen bundles that create rigidity. The laser treatment induces the denaturation of these extracellular matrix proteins, effectively breaking down the chaotic structure. As the area heals, the collagen fibers are reorganized into a more parallel, normal alignment, which significantly improves skin pliability.
Understanding the Trade-offs
Recovery and Downtime
Because this is an ablative procedure (meaning it removes tissue), it involves a more significant recovery period than non-ablative lasers. Patients must manage an open wound healing process, which includes oozing and crusting, for several days to weeks.
Necessity of Multiple Sessions
While ablative lasers offer significant results, a single session rarely resolves severe contractures. Because the laser operates "fractionally" (treating only a percentage of the skin at once), multiple treatment cycles are usually required to remodel the entire surface area of a scar.
Risk of Complications
Although precise, creating deep thermal damage carries risks. If the treatment depth or density is too aggressive for the patient's specific skin type, there is a risk of prolonged healing or pigmentation changes, requiring strictly controlled settings.
Making the Right Choice for Your Goal
The effectiveness of CO2 laser treatment depends heavily on aligning the treatment depth with your specific clinical outcome.
- If your primary focus is Functional Improvement (Range of Motion): You must ensure the treatment targets the deep dermis to physically break down the collagen bundles causing contracture and restriction.
- If your primary focus is Surface Texture: A more superficial setting may be sufficient to smooth out irregularities without necessitating the deep downtime associated with contracture release.
By physically removing rigid tissue and forcing the body to lay down organized collagen, Ablative Fractional CO2 Laser transforms static scars into dynamic, flexible skin.
Summary Table:
| Mechanism Phase | Action Performed | Biological Result |
|---|---|---|
| Targeted Vaporization | Creates Microscopic Treatment Zones (MTZs) | Physical removal of rigid, abnormal scar tissue |
| Deep Dermal Penetration | Energy reaches 250-800 microns deep | Targets the core of dermal stiffness and contracture |
| Neocollagenesis | Triggers fibroblasts and heat shock proteins | Stimulates production of new, healthy collagen fibers |
| Collagen Remodeling | Denaturation of chaotic collagen bundles | Reorganizes fibers into a parallel, pliable structure |
Revolutionize Your Clinic’s Scar Revision Outcomes with BELIS
At BELIS, we understand that treating complex burn scars requires precision and power. Our professional-grade Ablative Fractional CO2 Laser systems are engineered specifically for premium salons and medical clinics, providing the depth and control needed to release contractures and restore patient mobility.
Beyond advanced laser technology, BELIS offers a comprehensive portfolio of medical aesthetic solutions—from Nd:YAG and Pico lasers to HIFU, Microneedle RF, and body sculpting systems like EMSlim and Cryolipolysis. Partner with us to provide your clients with industry-leading results.
Ready to elevate your clinical capabilities?
Contact our experts today to find the perfect system for your practice.
References
- C. Scott Hultman, Bruce A. Cairns. Shine on: Review of Laser- and Light-Based Therapies for the Treatment of Burn Scars. DOI: 10.1155/2012/243651
This article is also based on technical information from Belislaser Knowledge Base .
Related Products
- Fractional CO2 Laser Machine for Skin Treatment
- Fractional CO2 Laser Machine for Skin Treatment
- Pico Picosecond Laser Machine for Tattoo Removal Picosure Pico Laser
- Pico Laser Tattoo Removal Machine Picosure Picosecond Laser Machine
- Trilaser Diode Hair Removal Machine for Beauty Clinic Use
People Also Ask
- What type of aftercare is recommended following a CO2 laser resurfacing treatment? Essential Recovery & Healing Guide
- How are lasers effective in treating acne scars? A Guide to Advanced Skin Remodeling and Professional Laser Solutions
- How does the Fractional CO2 Laser system compare to microneedling? The Ultimate Guide for Acne Scar Removal
- What is the core mechanism of action for Fractional CO2 Laser in the repair of acne scars? Science of Dermal Remodeling
- Why is a 5mm spot size considered necessary for the laser treatment of Striae Distensae? Precision in Stretch Mark Removal
