How long does picosecond laser take to work for melasma?

Melasma involves pigment-producing cells and can be influenced by sunlight, visible light, heat, hormones, and skin irritation. Picosecond treatment may fragment pigment, but the skin still needs time to clear it. The area can look temporarily darker, red, or irritated before it settles, and melasma can recur when triggers continue.

Because laser settings that are too aggressive may aggravate pigmentation, a dermatologist may favour cautious treatment and combine it with a broader melasma plan. Read more about the condition in [Melasma](/conditions/melasma/).

Use the sun and light protection recommended by your dermatologist every day, including hats or shade when appropriate. Avoid picking and pause irritating products during recovery. Do not start bleaching agents, exfoliants, or other active products without checking the plan. Keep review appointments so the clinician can decide whether to continue, modify, or pause treatment. Details about the procedure are available in [Picosecond Laser Treatment](/treatments/laser-and-energy/picosecond-laser-treatment/).

Contact the clinic if burning, pain, swelling, blistering, or redness is worsening instead of settling. Ask for assessment if the patches spread quickly or become substantially darker after healing, since the treatment plan may need changing.

Ask which melasma triggers are relevant to you, when to compare photographs, what aftercare products are suitable, and how recurrence will be managed. Discuss whether laser is appropriate if you are pregnant, breastfeeding, or using medicines that affect your skin.