Here’s how it works: with your face numbed by local anesthetic, a hypodermic needle is inserted underneath your skin, below the scar tissue, and run from side to side, beneath the surface of the skin. This breaks the connective tissue holding the scar to the undamaged skin below, encouraging the skin to regenerate, and eventually promote new collagen growth, which lifts that depression in the skin causing the scar.
There was never a sweeter sound than the “Pop! Pop! Pop!” that accompanied the inserted needle breaking up the fibrous bands, which had been pulling down your skin and creating the scars I longed to erase. Subcisions works best with rolling scars. Subcisions will not work on other scars (those of the ice pick and atrophic variety) but in those cases, lasers can actually have some benefit.