A scar is a fibrous tissue formed to repair an injury due to the proliferation of the dermis and epidermis. Unlike a normal wound, a scar leaves a mark on the skin. It may be the result of trauma, disease or surgery. Its size and healing time are directly proportional to the extent of the scar itself. At the time of its formation it appears redder, while with the passage of time the red fades to the extent that scars that are very visible in the first few months become almost invisible after a few years.

The outcome of a scar depends very much on where it is located, the sex and age of the person, and the type of scar itself: depressed, raised, hypertrophic, hypotrophic, regular, irregular, etc.

Keloid and hypertrophic scars are considered pathological scars. A keloid scar is a thick, reddened, itchy or painful neoformation that originates from a scar and develops beyond its borders with an invasive and persistent tendency. Its occurrence is very rare, it may appear mainly on the chest, ear pinnae and shoulders and is more common in black populations. Hypertrophic scarring is a neoformation that differs from keloid scarring in that the excess scar tissue remains within the confines of the scar and is red and raised. Also in this case the scar is accompanied by itching and sometimes pain.

To eliminate the problem of these unsightly and annoying scars,plastic surgery can be performed. The technique to be adopted can vary depending on the type of scar, its width and the area of the body affected. Scar revision surgery may involve an 'intralesional' or completesplit depending on the type of scar to be treated.

However, there are other types of treatment that can visibly improve the aesthetics of a scar. The laser, for example, is one of the first solutions to be evaluated, a safe and effective technique that must however always be performed by a specialist. With the laser, scars can be treated non-surgically and painlessly, both on the body and face. The laser promotes the regeneration of new tissue capable of repairing the epidermis and regenerating the dermis with younger, healthier and more beautiful tissue.

To instantly reduce the depth of scars, on the other hand, a filler can be injected into the scar to 'fill it in'.

Finally, another technique used is dermabrasion, which improves skin irregularity by removing the most superficial layer and giving the skin a smoother appearance.