Fake turd put on hair will make it cleaner? (7)
I believe the answer is:
shampoo
'cleaner?' is the definition.
(shampoo cleans hair)
'fake turd put on' is the wordplay.
'fake' becomes 'sham' (sham can mean fake or pretend).
'turd' becomes 'poo'.
'put on' means one lot of letters go next to another (some letters go on or after others).
'sham'+'poo'='SHAMPOO'
'hair will make it' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for shampoo that I've seen before include "Carpet/hair cleanser" , "lather" , "Hotel freebie - Warren Beatty movie" , "Hair-care product" , "Liquid cleaner" .)