Cannabis lovers head for sativa hair products (7)
I believe the answer is:
stoners
'sativa hair products' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'cannabis lovers head for' is the wordplay.
I cannot quite understand how this works, but
'for' could be 'to' (eg both can mean 'in the opinion of') and 'to' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Another definition for stoners that I've seen is " #They killed Stephen".)