How does acne scar laser treatment work?

Fractional devices treat microscopic columns of skin while leaving surrounding areas available for healing. The controlled injury signals repair and encourages new collagen, which can gradually improve shallow depressions and uneven texture. Ablative options remove part of the surface as well as heating deeper tissue; non-ablative options heat without removing the surface. CO2 laser is an ablative example, while the exact device and settings depend on scar depth, skin tone, active acne, and previous treatments.

Laser is less suited to every scar pattern. Deep tethered rolling scars may need release with subcision, and raised scars require a different assessment. Pigment changes are a particular consideration in darker skin tones.

A clinician should first assess whether acne is active, review medicines such as isotretinoin, and identify the scar type. Before treatment, discuss sun exposure, a history of cold sores, tendency to form raised scars, and prior pigment changes. Afterward, expect redness, warmth, swelling, or peeling according to the device. Follow the prescribed cleansing and moisturising routine, avoid picking, and protect healing skin from sunlight. Improvement develops gradually as collagen remodels, and a course of treatments may be considered rather than a single session.

Contact the treating clinic for worsening rather than settling pain, spreading redness, pus, fever, blistering, or delayed healing. Seek urgent help for facial swelling with breathing difficulty or eye symptoms. A new dark or pale patch should be reported, particularly if it expands after the treated skin has closed.

Ask which scar type is being treated, why a particular laser is suitable for your skin tone, whether another procedure should come first, what downtime to expect, and how current acne or medicines affect the plan.