It depends on the chosen treatment approach. Your provider may recommend a re-excision of the scar to prevent keloids or hypertrophic scars from forming. Microneedling, while painless, is also a common treatment that is minimally invasive, however not non-invasive. CO2RE can be used in fully ablative mode or in its fractional mode, which is minimally invasive.
Are scar treatments non-invasive?