Because they're what I use, if I'm covering one on set I would use MAC studio finish concealer in a shade lighter than your skin followed by MAC face and body foundation in your match.
Always make sure you layer. Do a layer, leave it to set, add another layer etc.
If it's for every day, there are a few good day tp day ones that I've heard of Kryolan spray foundation. A few girls use that if someone's filming all day or something.