A scar is an area of fibrous tissue that replaces normal skin after an injury. Scars result from the biological process of wound repair in the skin, as well as in other organs and tissues of the body. Thus, scarring is a natural part of the healing process, but scars can be fixed by some ways like:

Laser treatment:
Ablative lasers such as the carbon dioxide laser (CO2), ablative lasers work by destroying the epidermis to a certain depth. Healing times for ablative therapy are much longer and the risk profile is greater compared to non ablative therapy; however, non ablative therapy offers only minor improvements in cosmetic appearance of strophic and acne scars

Chemical peels

Surgery
1550nm Fractional laser, Fractional RF and latest fractional plasma as most safe and non-invasive way without any downtime.