Suds that may be hot brought in afterwards (6)
I believe the answer is:
lather
'suds' is the definition.
(synonyms)
'hot brought in afterwards' is the wordplay.
'hot' becomes 'h' (abbreviation eg on taps).
'brought in' is an insertion indicator.
'afterwards' becomes 'later' (synonyms).
'h' going within 'later' is 'LATHER'.
'that may be' acts as a link.
(Other definitions for lather that I've seen before include "Soapy froth" , "Foam made from soap" , "Mass of froth" , "Foamy soap as for shaving" , "Frothy bubbles from soap" .)