questioning no shampoo

ive been doing no shampoo for about half a year now and I have very mixed feelings.

When I had long hair I noticed my natural curls show themselves more which was good but I didnt see much of a change in my scalps over production of oils.

Now I have a shaved head and I have alot of build up on my scalp and it feels dry. Im still washing it about once a week but im considering just washing my hair when it feels like it needs it and using healthy shampoos.

the way I see it this is a trend that is misleading at worst. im glad it taught people to question how they wash their hair but it cannot be a one size fits all solution because that is not how humans work. It is very useful if you have a specific hair type or hair needs but it becomes tedious and tiresome if you arent in the group.

any tips for a buzzed head and maintaining a nice healthy moisturized scalp?