Antiperspirant (9)

I believe the answer is:
deodorant
'antiperspirant' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for deodorant that I've seen before include "Toiletry product" , "Remover of smells" , "Underarm protection?" , "for keeping smells away" , "Underarm spray, perhaps" .)