Deflecting Palm doesn't target any permanent or player. You choose a source of damage as Deflecting Palm resolves. If multiple prevention and/or replacement effects are trying to apply to the same damage, the player who would be dealt damage chooses the order in which to apply them.

Can you Deflecting Palm infect?

Does [[Deflecting Palm]] work with infect? No, because Deflecting Palm is the source of the damage dealt to the source's controller, not the creature with infect. In contrast, [[Shining Shoal]] redirects the damage while keeping its original source, so it can cause infect damage.

Does Deflecting Palm get around Hexproof?

Can I use deflecting palm on creatures with hexproof? Deflecting palm doesn't have the word target anywhere in the text. Yep! Doesn't target, doesn't care about hexproof!