How Does CO2 Laser Resurfacing Work?

The laser targets water in skin cells. Depending on the device settings and treatment plan, it may vaporize a thin surface layer or create microscopic treatment columns surrounded by untreated skin. The treated areas trigger a wound-healing response: old surface cells shed, new skin forms, and collagen fibers gradually reorganize. This can soften uneven texture, some scars, fine lines, and selected sun-related changes.

A clinician chooses the depth, density, and energy for your concern, skin type, treatment area, and recovery tolerance. Fractional delivery leaves bridges of untreated skin between treatment columns, while more extensive resurfacing affects a broader continuous surface and generally needs more recovery planning. Results develop as the skin heals rather than appearing immediately.

Before treatment, discuss active acne, eczema, cold-sore history, medicines, recent tanning, pigment changes, and any tendency to form raised scars. Follow the clinic's instructions about cleansing, prescribed medicines, and sun avoidance. The procedure may involve numbing cream, local anaesthetic, or another comfort plan.

Afterward, expect redness, swelling, warmth, peeling, or crusting to vary with treatment depth. Keep the area clean and protected exactly as instructed, do not pick flakes or crusts, and avoid unapproved exfoliants while the surface repairs. Shielding new skin from sunlight helps reduce unwanted pigment change. Healing time and the number of sessions depend on the settings and the concern being treated.

Contact the treating clinic promptly if pain, swelling, redness, or warmth is worsening instead of settling, or if you notice pus, spreading redness, fever, blistering, or difficulty caring for the treated area. Seek urgent medical help for breathing difficulty, facial swelling affecting the eyes or throat, or a rapidly worsening reaction. A new or changing lesion should be assessed rather than treated cosmetically without a diagnosis.

Ask which CO2 approach and depth fit your goal, whether a biopsy or another diagnosis is needed first, how your skin tone may affect pigment risk, what aftercare products are permitted, and what timeframe is realistic for visible change. Also ask about previous cold sores, scar history, work or social downtime, and signs that require an early review.