the proper camoglaue make-up you can buy works fairly well, some of it is aimed at tattos so if they can cover them they can cover scars. However, if you're skin has becme sort of uneven with lumps and depts it won't cover them, it just makes them the same colour as the rest of your skin so less noticable...
Last year I had to wear a cocktail dress to an event, which showed off a huge scar I have on my leg which is raised to an inch (you can see it through trousers
) in the past poeple have noticed it as it's red (and changes to purple in the cold lol) but with the make-up over it noone noticed. In fact less people noticed during that evening than do when I ewear trousers and jeans and they see a big long lump poaking up through them
. so it's fairly effective. THen again I've found in the past that if you wear a colourful braclet and have your arms out then people don't notice the scars as their attention is drawn to te braclet and away from them.
I have a book somewhere on the scence and psychology of attention which has a whole chapter of "hiding in plain sight" will see if I can find it later as it has loads of little tricks like that in it