Eg, detergent (8)
I believe the answer is:
cleanser
'eg detergent' is the definition.
(I know that detergent is a type of cleanser)
This is the entire clue.
(Other definitions for cleanser that I've seen before include "One wanting to get pure" , "Purifying lotion" , "Cleaning cream or lotion" , "Preparation to remove dirt" , "Lotion removing grime" .)