What is pico laser?
Pico laser is a category of laser used for selected pigment lesions, tattoo removal and—in some devices and modes—skin remodelling. Its pulse duration is measured in picoseconds, or trillionths-of-a-second units; actual pulse widths vary by device. Widely known systems in this category include PicoSure and PicoWay, but the brand name alone does not establish a suitable indication or setting.
How does pico laser work?
Picosecond systems generally have a greater photoacoustic contribution and less thermal diffusion than longer-pulse systems, but thermal and inflammatory effects are not zero. Selected fractional or diffractive modes are studied for collagen remodelling; an ordinary pigment setting does not automatically tighten pores or stimulate clinically meaningful collagen. PIH remains possible and is not consistently lower across every wavelength and protocol.
What can pico laser treat?
- Selected diagnosed freckles, solar lentigines and other benign pigment lesions
- Selected melasma cases under a doctor-led plan; worsening and PIH are possible
- Some post-inflammatory dark marks, depending on cause and skin condition
- Selected fractional modes may improve texture, apparent pore size or some acne scars; evidence and results vary
- Tattoo removal when the available wavelength fits the ink colour and skin type
How many sessions until you see results?
Session number and spacing vary by diagnosis, wavelength, mode, settings, skin response and—when relevant—tattoo ink. A fixed package cannot predict an individual result. Melasma usually requires ongoing trigger control and may relapse; it is not a one-session treatment.
Does it hurt? Is there downtime?
Sensation and after-effects depend on the target, wavelength, mode and settings. Downtime can range from minimal temporary redness to swelling, tenderness, pinpoint crusting or more visible pigment change. Numbing or cooling may be used for some protocols but is not universal. Ultraviolet and visible-light exposure can worsen pigment or contribute to recurrence, so follow the treating doctor's aftercare for the exact treatment performed.
Who is pico laser right for?
Suitability starts with a diagnosis, not a desire for general “brightening.” A doctor should identify the pigment or tattoo target, explain why the machine's wavelength and mode fit, and consider skin type, previous PIH and active irritation. Structural acne scars often need a scar-specific plan and may require several methods rather than a standard pigment setting.
The bottom line
Pico is one category of pigment and tattoo laser. Its usefulness and risk depend on the diagnosis, wavelength, delivery mode, settings and operator—not the word “Pico” alone. Be cautious of fixed-session promises or claims of zero heat, zero downtime or zero PIH.