[mortim3r]

Hi, I hope this is ok to post. I've had my hamster for 10 days now and have only just managed to get a proper look at him where he's allowed me to stroke him.
His right scent gland looks greasy? And the furs around it clump together a bit. I also feel like it's a bit rougher than the one on the left which is perfectly clean/what I'd expect. I think I've seen him a couple days ago reaching around to this spot maybe it's been irritating him. Does this look like something that needs to be seen by a vet or is there anything I can do to help him/will it clear up?
Sorry I hope the picture is clear enough.
Thanks so much.

EDIT: It's not scab-like and doesn't look infected or anything. He does have a sand bath but I'm wondering if maybe something is wrong or he's just not very good at cleaning himself??