Skinmaxx and ridding scars

[AverageLooksmaxxer]

After my accutane (or during because I have super insensitive skin) I'll use azelaic acid and niancimide to get rid of minor scarring and go in with tretinoin later in the year. Any recommendations and good brands for niancimide and azelaic acid?
Also anyone have any good products for skin barrier?

 

[yue]

Skin barrier is a made-up phrase

 

[AverageLooksmaxxer]

The skins barrier is a term.