Hi there,
One session of Picosure will give you noticeable results of 5-10% improvement with no downtime.
PicoSure utilities the Focus Lens which targets the laser energy at 20x the usual strength deep under the skin, WITHOUT removing the top layer of the skin. Therefore it has no downtime. It is also proven to produce noticeable collagen at the areas where the scars are.
For moderate improvement, I suggest that you will need 5-6 sessions of Picosure.