Birthmarks can be removed through laser treatment, surgery, or medication, depending on the type, size, and location. Most removal is done for cosmetic reasons, though some birthmarks are removed to prevent medical complications. The method your dermatologist recommends will depend on whether your birthmark is vascular (made of blood vessels) or pigmented (made of clusters of pigment cells), and how deep it sits in your skin.
Vascular vs. Pigmented: Why the Type Matters
Birthmarks fall into two categories, and each responds to different treatments. Vascular birthmarks, like port-wine stains and hemangiomas, form from blood vessels that didn’t develop correctly. Pigmented birthmarks, like café-au-lait spots and moles, form from clusters of pigment-producing cells. No one knows exactly what causes most birthmarks, though some run in families.
Getting a dermatologist to identify the type early is important because it determines the best removal approach and the ideal timing for treatment. Port-wine stains, for example, can grow and thicken over time, making early treatment more effective.
Laser Treatment for Vascular Birthmarks
Pulsed dye lasers are the standard treatment for vascular birthmarks like port-wine stains. The laser emits intense yellow light that is selectively absorbed by the red color of blood in the birthmark, damaging those blood vessels and causing the mark to gradually fade. Other devices used for vascular lesions include intense pulsed light (IPL) systems.
For port-wine stains, expect roughly 6 to 10 laser sessions spaced 2 to 4 weeks apart. In one study, all patients achieved 50% to 100% clearance after just 5 treatments. Complete or near-complete clearance occurred in about 75% to 87% of patients treated at 2- to 3-week intervals.
The risk of scarring with pulsed dye laser treatment is very low, estimated at less than 1%. Some patients develop temporary light or dark spots in the treated area that typically fade over time. People with darker skin have a higher chance of temporary skin darkening after treatment.
Laser Treatment for Pigmented Birthmarks
Pigmented birthmarks like café-au-lait spots and certain brown or black marks respond to a different set of lasers. These devices fire in extremely short pulses (a billionth of a second) that break apart pigment clusters without damaging surrounding tissue.
Results for pigmented birthmarks are less predictable than for vascular ones. A 2023 systematic review found that 75% of patients with café-au-lait spots achieved at least 50% clearance, but only about 43% reached 75% clearance. The overall recurrence rate was 13%, meaning some pigment can return after treatment. The shape of the birthmark also matters: irregular-bordered café-au-lait spots respond significantly better to laser treatment than smooth-bordered ones, which tend to show only fair improvement.
Medication for Hemangiomas
Infantile hemangiomas, the raised red birthmarks common in babies, are increasingly treated with medication rather than lasers or surgery. Beta-blocker drugs work by constricting the blood vessels in the hemangioma and slowing the growth of new vessels, causing the birthmark to shrink. Topical versions applied directly to the skin are used for surface-level hemangiomas, while oral forms are prescribed for deeper or faster-growing ones.
This approach is especially useful because many hemangiomas appear in the first weeks of life and grow rapidly. Starting medication early can prevent the birthmark from reaching a size that would require more invasive treatment later.
Surgical Removal
Surgery is typically recommended when a birthmark is too deep or too large for lasers alone, when it poses a medical risk, or when it involves tissue that lasers can’t effectively treat. Common candidates include large moles present from birth, deep hemangiomas that damage surrounding skin, and sebaceous nevi on the scalp (which can cause expanding bald spots).
Most birthmark surgery is done in an office setting with local anesthesia. A small scalpel is used to cut out the birthmark. Very large birthmarks may require general anesthesia in a surgical facility.
Staged Removal for Large Birthmarks
When a birthmark is large, surgeons often remove it in stages rather than all at once. During the first procedure, they remove a section from the middle of the birthmark, then wait several weeks for the incision to heal. This is repeated two or three times until the remaining birthmark is small enough to remove with a final, much smaller incision. The result is a shorter scar than a single large excision would produce.
Another technique for large birthmarks is tissue expansion. A small balloon is implanted beneath healthy skin next to the birthmark. Over several weeks, the balloon is slowly inflated, which stimulates new skin cells to grow over it and create an extra flap of tissue. When the birthmark is removed, this new flap of skin is used to cover the area, leaving a more natural appearance. For birthmarks on the scalp, this technique helps preserve healthy hair follicles at the site.
When to Treat: Timing Considerations
For children, earlier treatment often produces better results. Young children have greater skin elasticity, which speeds healing and reduces the chance of scarring. Dermatologists often recommend removing birthmarks before a child reaches maturity for this reason. Port-wine stains in particular respond better to laser treatment when sessions begin early, before the birthmark thickens.
There are exceptions. Mole removal, when recommended, is often delayed until the child reaches puberty. Hemangiomas on the face near the eyes, nose, or mouth may need urgent treatment regardless of age because of the risk of interfering with vision or breathing. Location is one of the biggest factors in the decision to treat: birthmarks on the face, scalp, and neck are the most commonly removed because they sit in highly visible areas.
Recovery and What to Expect
After laser treatment, the treated area often turns red or dark and forms a crust. This crust falls off on its own within 1 to 2 weeks. You should not pick at it or try to remove it early. Full healing can take many weeks, with the area gradually improving in appearance over that time. CO2 laser treatments, used for some deeper birthmarks, carry a higher risk of scarring than pulsed dye lasers.
Surgical recovery depends on the size of the excision. Small office-based procedures heal relatively quickly, while staged removals or tissue expansion involve multiple recovery periods over weeks or months. Vitamin E is sometimes suggested for scar prevention after treatment, but there is no good evidence that it helps prevent scarring from laser procedures.
For adults considering removal, the process is the same but healing may take slightly longer and scarring risk is somewhat higher than in children. Multiple sessions are almost always needed for laser-based approaches, regardless of age. The total number depends on the birthmark’s type, depth, and how it responds to initial treatments.