Laser resurfacing can cause side effects, though they're milder and less likely with non-ablative approaches than with ablative methods.
Inflamed, swollen, itchy and painful skin. Treated skin may swell, itch or have a burning sensation. Your skin may look inflamed for several months following ablative laser treatment.
Acne. Applying thick creams and bandages to your face after treatment can worsen acne or cause tiny white bumps to form for a short time. These bumps also are called milia.
Infection. Laser resurfacing can lead to a bacterial, viral or fungal infection. The most common infection is a flare-up of the herpes virus — the virus that causes cold sores.
Changes in skin color. Laser resurfacing can cause treated skin to become darker or lighter than it was before treatment. This is called post-inflammatory hyperpigmentation when the skin darkens and postinflammatory hypopigmentation when the skin loses color. People darker skin tones have a higher risk of long-term skin color changes. If this is a concern, seek out an expert with experience in selecting lasers and settings for a range of skin colors. Also ask about other facial rejuvenation techniques that are less likely to cause this side effect. Radiofrequency (RF) microneedling is one such option.
Scarring. If you have ablative laser resurfacing, you are at a slightly higher risk of scarring.