Spot about to be covered with soothing liquid (8)
I believe the answer is:
location
'spot' is the definition.
(I've seen this before)
'about to be covered with soothing liquid' is the wordplay.
'about' becomes 'ca' (short for circa).
'to be covered with' indicates putting letters inside.
'soothing liquid' becomes 'lotion' (I've seen this before).
'ca' inserted inside 'lotion' is 'LOCATION'.
(Other definitions for location that I've seen before include "Particular place" , "Setting" , "Site of film production away from studio" , "Spot - where films may be shot" , "Position,place" .)