Lost the head - went for it and left a lasting impression (6)
I believe the answer is:
etched
'lost the head went for it and left a lasting' is the definition.
I can't judge whether this defines the answer.
'impression' is the wordplay.
I cannot really see how this works, but
'impression' could be 'etch' (I've seen this before) and 'etch' is found within the answer.
The remaining letters 'ed' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for etched that I've seen before include "Carved on metal with acid" , "made some kind of score" , "Made lines on metal with acid" , "Incised" , "Cut or impressed into a surface" .)