Bearded dragon has black rim on scales

[TurtugaTom]

It was also on a small peice of shed that fell off he has stripes on his tail but ive never notice this much black on the rims I bath him everyday and its been visible for about a week could it be coming of to soon? The lighter parts still have shed

 

[KarrieRee]

Bathing too much is going to dry out his scales ---- it looks like shed and it can take some time to shed - tails are that way