A solution for stiff locks (9)
I believe the answer is:
hairspray
'a solution' is the definition.
(I have seen 'fine solution' mean 'hairspray' so perhaps 'solution' could also mean 'hairspray')
'stiff locks' is the wordplay.
I cannot quite understand how this works, but
'locks' could be 'hairs' (locks can mean hair) and 'hairs' is present in the answer.
The remaining letters 'pray' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'for' acts as a link.
Can you help me to learn more?
(Other definitions for hairspray that I've seen before include "fine solution" , "setter" , "pressurised stuff?" , "Barnet manager" .)