Paint nudism au naturel, finally implicated in recurrent commotion (8)
I believe the answer is:
emulsion
'paint' is the definition.
(I've seen this before)
'nudism au naturel finally implicated in recurrent commotion' is the wordplay.
'finally' suggests the final letters.
'implicated in' indicates putting letters inside.
'recurrent' is a reversal indicator (recurrent can mean turning back).
'commotion' becomes 'noise' (I've seen this in another clue).
The last letters of 'nudism au naturel' are 'mul'.
'noise' written backwards gives 'esion'.
'mul' inserted within 'esion' is 'EMULSION'.
(Other definitions for emulsion that I've seen before include "Type of paint" , "Mixture involving two liquids which do not readily combine" , "Wall paint" , "Mixture of insoluble liquids" .)