Can Laser Therapy Reduce the Appearance of Old Scars on the Body?
Laser therapy can reduce the visual and textural impact of many mature scars, including some left by acne, surgery, injury or burns. Fractional resurfacing can stimulate collagen beneath a scar, while vascular lasers can target redness. Results are usually improvement rather than complete removal because a scar is repaired tissue with its own colour, thickness and blood supply.
An old scar does not automatically become harder to treat. If it remains healthy and has no signs of infection, a clinician may still consider laser therapy even years after the wound healed. Raised, depressed, contracted and pigmented scars need different approaches, and treatments that work for one scar type may disappoint with another.
Australian skin deserves particular planning because strong UV exposure can deepen post-treatment pigmentation. People with darker skin tones, including many Australians, may need conservative settings and careful review of their medical and treatment history. Scar revision is also usually elective, so Medicare generally does not cover it, and private health rebates depend on the policy.
How laser treats mature body scars
During fractional laser treatment, microscopic columns of skin are heated or removed. The controlled injury triggers a wound-healing response, encouraging collagen and elastin production over time. As the scar remodels, it may look flatter, softer and less sharply defined. Several sessions are commonly needed, with improvement developing across weeks or months rather than immediately after the appointment.
Different lasers serve different purposes. CO2 and erbium:YAG systems resurface skin more aggressively and can produce clearer changes for pronounced textural scars, but they require more recovery. Non-ablative fractional lasers heat tissue beneath the surface, often giving a gentler result with less downtime. Pulsed-dye lasers focus on blood vessels and may reduce the pink or red appearance of vascular scars.
Treatment can be used on the body, but the clinician must adjust energy levels for the location, skin thickness and nearby structures. Arms, legs, chest and back respond differently, and areas with thinner skin or greater sun exposure may heal more slowly. A scar should be assessed in person before a treatment plan is made.
Matching treatment to scar type
The starting point is a clear scar classification, not simply the number of years since the injury. Texture, height, width, colour, movement and symptoms all influence the likely response. Photographs taken under consistent lighting also help the practitioner set a realistic goal and monitor gradual change.
Patients often compare several options during an assessment. The most suitable laser depends on whether the dominant feature is texture, redness, raised tissue or pigmentation. In some cases, a combined or staged approach is preferable, while surgery may be the safer option for a restrictive contracture scar.
| Scar pattern | Typical features | Approach that may be considered | Expected result and main caution |
|---|---|---|---|
| Atrophic | Depressed below surrounding skin | Fractional CO2, erbium:YAG or non-ablative fractional laser | May become shallower and softer, usually over several sessions |
| Hypertrophic | Raised but contained within the original wound | Pulsed-dye, fractional or combined laser treatment | Can reduce height and redness, although recurrence remains possible |
| Keloid | Raised and extends beyond the wound boundary | Specialist vascular or fractional treatment within a broader plan | Often recurs and may require dermatological or surgical management |
| Vascular | Pink, red or purple because of prominent blood vessels | Pulsed-dye laser | Usually improves colour more effectively than surface texture |
| Contracture | Tight, tethered or restrictive scar | Medical or surgical assessment before any laser treatment | Laser alone cannot release the tissue; function takes priority |
| Pigmented | Brown, grey or unevenly coloured | Pigment-specific or vascular treatment selected by skin tone | A test spot and strict sun protection are important |
Preparing for treatment and aftercare
Preparation starts with a medical history and visual examination. Current medicines, previous peels, recent tanning and a history of unusual healing can affect both safety and results.
- Bring old photographs of the scar and a timeline of previous treatments.
- List current medicines, supplements and recent cosmetic procedures.
- Mention any previous keloids, pigment changes or prolonged wound healing.
- Arrange a patch test when the scar has significant colour or texture differences.
After treatment, the skin needs time to repair. The routine depends on the device and energy used, so written aftercare instructions from the clinic are essential. Laser resurfacing can cause temporary swelling, crusting, oozing or a sandpaper-like texture during the first several days.
- Keep the area clean and follow the clinic’s cleansing and moisturising instructions.
- Use broad-spectrum SPF 50+ sunscreen once the skin is ready.
- Avoid swimming, saunas, tanning and strenuous exercise for the recommended period.
- Seek prompt advice for spreading redness, increasing pain, fever or pus.
Hot Australian summers make aftercare especially important. Keep the area covered from direct sun, avoid self-tan products and do not pick at flakes or crusts. If the scar is on an exposed part of the body, protective clothing may be more practical than relying on sunscreen alone.
Results, skin tone and Australian sun exposure
Results vary with scar biology. Atrophic scars may respond well when collagen can be built beneath the depression. Hypertrophic scars stay within the original wound boundaries and can sometimes flatten with vascular or fractional treatment. Keloids extend beyond those boundaries and often recur, so laser may be used only as part of a wider management plan.
Contracture scars that pull skin tight, particularly after a severe burn, need medical assessment if they restrict movement or cause symptoms. Laser cannot release tethered tissue by itself. Pigmented scars may need a different wavelength or specialist pigment procedures, and a test spot helps gauge the risk of post-inflammatory hyperpigmentation.
Cosmetic lasers are widely available through clinics in Sydney, Melbourne, Brisbane, Perth and other Australian cities, yet the device matters less than the clinician’s training and safety systems. Confirm qualifications, Australian registration where the procedure is medical, infection-control standards, eye protection and a clear escalation plan. Request an itemised quote in Australian dollars that includes sessions, add-ons, follow-up appointments and potential complication costs.
Planning a scar consultation
A useful scar consultation should include a diagnosis, a treatment goal and a realistic timeline. Bring the scar history, old photographs and a list of treatments already tried. Ask why a particular laser suits the scar, how many sessions may be needed and what happens if the response is limited.
Laserderm’s South African clinic network provides educational material on aesthetic skin concerns and doctor-led treatment pathways. Australians can review Laserderm clinic information to understand its services and how to contact its doctors, while confirming that any clinician providing treatment locally meets Australian requirements.
Book a scar assessment with an appropriately qualified Australian clinic before committing to a treatment package. Arrive with the area clean, avoid recent sun exposure and self-tanning, and request a written plan covering expected changes, downtime, risks and aftercare. To take the next step, contact the clinic, arrange a personalised consultation and discuss whether laser therapy is a realistic option for your scar.