Some shampoo, perhaps, to get a chest in a lather (6)
I believe the answer is:
sachet
'some shampoo' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'to get a chest in a lather' is the wordplay.
'to get' indicates putting letters inside.
'in a lather' indicates anagramming the letters (phrase meaning 'nervous or anxious').
'chest' is an anagram of 'schet'.
'a' placed into 'schet' is 'SACHET'.
'perhaps' acts as a link.
Can you help me to learn more?
(Other definitions for sachet that I've seen before include "Small packet (of, eg, shampoo)" , "Small soft bag, containing perfumed powder perhaps" , "Small envelope-like container" , "Sealed bag or packet" , "'Small soft bag, for perfumed powder say (6)'" .)