Dry skin on my blue staff's head (he's 6months old)

My blue staff has dry patches on his head, also just above his tail on his back any ideas what i can use or give him.

iv also had this blue staffs are more prone with whites to wet dermise on there heads it can easily be cleared up with a short course of cream from the vets
and the patch on the tail is a gland that all staffys have but is more noticable withn there couler

Thank you.

the one in the middle of the head is a gland as well if i remember correctly they have five glands in all

Could also be demodex. All pups are born with some of the demodex mite, and sometimes they can build up a bit & cause a little bald patch which looks a bit dry. If it isn't inflamed. irritated or getting bigger, don't worry. Otherwise see the vet & he'll give you some cream for it.