Does laser tattoo removal leave a scar?

Yes, tattoo removal can completely remove a tattoo, but it can also sometimes leave a "scar".  The scar can be as minor is a slightly shiny, whitish "shadow", or it can be much thicker and more severe.  In our practice, we only use the Picosure laser which has been proven to not only be more effective, but also less likely to leave significant scars.  We have also treated scars and recalcitrant tattoos treated with other lasers and have some effective techniques to break up scar tissue to release more ink.

Tattoo removal with lasers can vary how the procedure is performed by different providers. It is important to see a board certified dermatologist or plastic surgeon who has had appropriate training with lasers. Scars are very rare but can be created if there is a secondary infection or if the laser settings are not appropriate for the skin type. Some colors respond better than others and although some tattoo pigment is cleared 100%, many results are very good while some hint of a shadow can remain. Lighter skin color or post inflammatory darkening of one's skin can occur and this is usually temporary. There is a small percent of  tattoos for unknown reasons are resistant to the laser treatment and only a small component of the pigment diminishes. Different colors, depth of tattoo, age of tattoo, skin type are some of the variables that may affect the outcome.  It was only in the older days where, as an example, dermabrasion or salabrasion were done to lighten and remove tattoos and scars were inevitable. It is not the goal to hide a tattoo by causing a scar over it.The information provided in Dr. Shelton's answer is for educational purposes only and is not intended to constitute medical advice.  The information provided should not be relied upon as a substitute for consultations with a qualified health professional who may be familiar with your individual medical needs. 

If the treatment is performed correctly by an experienced clinician using a Q-switched laser at the correct settings you should not have a scar. Additional factors that prevent scarring are spacing your treatments at least 6 weeks apart and following proper after care to allow your skin to heal. As far as full removal, most tattoos can be fully removed however you may experience the phenomenon of ghosting.