What should you know about CO2 laser for freckles?

CO2 laser energy removes or heats controlled areas of the outer skin. As the treated surface heals, freckles may look lighter and the surrounding texture may become more even. A freckle should be assessed before cosmetic treatment because not every brown mark is a freckle, and a changing or unusual spot may need a different evaluation.

Freshly treated skin can be red, swollen, tender, flaky, or temporarily darker or lighter. Pigment changes are a particular concern after laser treatment, especially when skin is exposed to sunlight during healing. The clinician should review your skin tone, tanning, previous pigment problems, medicines, and the number and location of spots.

Avoid tanning and follow instructions about sunscreen, skincare, and medicines before the procedure. Ask whether a test area or a gentler approach is appropriate. [CO2 Laser](/technology/co2-laser/) explains the technology, and [CO2 Laser Resurfacing](/treatments/laser-and-energy/co2-laser-resurfacing/) describes the wider treatment category.

Afterward, keep the area clean and moisturised as directed, do not scratch or peel flakes, and shield the skin from sunlight with the measures your clinician recommends. Do not treat a spot that is bleeding, crusting, rapidly changing, or otherwise different until it has been examined.

Contact the clinic if redness spreads, pain increases, drainage develops, or healing seems to stall. Arrange prompt assessment for a treated spot that changes in shape or colour, bleeds without a clear cause, forms a persistent crust, or becomes distinctly different from nearby freckles.

Has each spot been identified as a freckle? Could another treatment be more suitable for my skin tone? How will you reduce pigment-change risk, what should I use during healing, and how should I monitor the treated areas?