The silicone sheets aren't cheap, which is why I haven't gotten them yet (I'm still looking into which will be the best options) but it seems like it'd be foolish to skimp on post-surgical care. There are sheets that can be reused for a long time and apparently they get worn 23 hours a day (with a little time to clean them, clean the skin, and reapply).
I do recall one time when I had a hugely raised scar on the thin delicate skin on the top of my foot. For a while I just put a bandaid over it, then I got a little pack of silicone sheets and used those. It did work and I can't find where the scar used to be. I don't know if it was coincidence or not, of course. In any case, they told me that you have to wait to use any of this stuff until after the incisions are sealed up so it'd be after the stitches are out anyway. But I know it's something I'd want at hand for use the moment it was okay to use it.