Most newborns have dry patches on their skin after a few days, especially if they’ve been born past their due date. It’s not a problem at all for your session though, I’ll use posing to minimise how much is on display, and then editing to reduce, if not remove, the dry patches. I don’t actually over-process your baby’s skin in your finished images, as I don’t like images that make them look waxy and unreal. They’ll still have their skin texture, which may include some little flakes and dry spots, but that’s part of who they are at that moment in time.
If you’d like to read more about Newborn Editing then you can check out my fuller article – The Art of Newborn Editing