Reduce intensity? No we don't, unfortunately (4,4)
I believe the answer is:
tone down
'reduce intensity?' is the definition.
(to tone something down is to make it less intense)
'no we don't unfortunately' is the wordplay.
'unfortunately' indicates anagramming the letters.
'no'+'we'+'dont'='nowedont'
'nowedont' anagrammed gives 'TONE DOWN'.
(Other definitions for tone down that I've seen before include "Moderate" , "D to C, perhaps?" , "Mute" , "Temper" , "Make less harshly coloured" .)