How effective is picosecond laser treatment for hyperpigmentation?

Hyperpigmentation is a description rather than one diagnosis. It can follow acne or injury, arise with hormonal or inflammatory conditions, or reflect pigment in different skin layers. Picosecond pulses target pigment particles, but a laser cannot correct an ongoing trigger such as irritation or ultraviolet exposure. Surface pigment may respond differently from deeper pigment, and some skin types can develop temporary darkening or lightening after treatment.

A visible improvement may be gradual. The clinician needs to distinguish the cause and depth of the colour change before deciding whether laser is suitable or whether medical treatment and sun protection should come first.

Have the area examined by a dermatologist, particularly if the pigmentation is new, uneven, itchy, or changing. Share your skin tone, tendency to mark after inflammation, current creams, pregnancy or breastfeeding status, recent tanning, and previous procedures. Follow the prescribed preparation and aftercare, keep the skin protected from sunlight, and pause irritating products only as directed. Do not scrub, peel, or pick treated skin while it heals.

Ask for prompt review if treated skin develops severe pain, blistering, increasing warmth, pus, rapidly spreading redness, or a strong reaction that is not settling. Arrange assessment of a pigmented mark that changes, bleeds, develops a persistent sore, or differs from nearby marks before cosmetic treatment.

Ask what is causing the pigmentation, whether laser is appropriate for its depth, how your skin may react, and what alternatives could address the trigger. Clarify the expected healing pattern, sun protection, and what symptoms should prompt a review.