Balding husband disappearing into a state of invisibility? (4,3)
I believe the answer is:
thin air
'state of invisibility?' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for thin air that I've seen before include "State of invisibility" , "Nothingness into/from which things might magically (dis)appear" , "Stratosphere" , "Vanish into . . . . . . . - disappear completely" , "Out of -- means from nowhere" .)