Yes and yes
There's no such thing as a scar that isn't permanent (except those that are made in utero), but many fade considerably and some to the point that a patient may feel it disappeared.
are advantageously planned by plastic surgeons so as to usually be felt by the patient not to be a problem. Scars do tend to be more noticeable in the teen
years. See only an ASPS/ASAPS plastic surgeon.