What does pulsed dye laser treatment treat?

The laser delivers yellow light that is absorbed mainly by blood vessels near the skin surface. This can reduce the appearance of redness without removing the surrounding skin. A dermatologist may consider it for persistent facial flushing, thread veins, red marks left after inflammation, or selected vascular birthmarks. The treatment choice depends on the colour, depth, size, and location of the target.

It is not a general treatment for every type of pigmentation, acne, or raised scar. A consultation helps distinguish blood-vessel redness from brown pigment, active infection, or another skin change that needs a different approach.

Tell the clinician about recent tanning, medicines that increase light sensitivity, a history of cold sores, and any tendency to scar. After treatment, the area may look red, swollen, or bruised and may feel warm or tender. Follow the aftercare plan, protect the skin from sunlight, and avoid picking or rubbing treated areas while they settle. Several appointments may be advised when the vessels are widespread or deeper.

Contact the treating clinic if swelling, blistering, increasing pain, spreading redness, or drainage develops rather than improving. Seek urgent medical care for facial swelling with breathing difficulty, a rapidly worsening reaction, or fever with an expanding painful skin area.

Ask whether the redness is vascular, how many sessions may be appropriate, what temporary changes to expect, and which medicines or skin products should be paused. You can also ask whether [Pulsed Dye Laser](/technology/pulsed-dye-laser/) is suitable for your concern and how it compares with [Sclerotherapy](/treatments/injectables/sclerotherapy/) for leg veins.