Relaxed, being additive-free (7)
I believe the answer is:
natural
I believe this is a double definition.
'relaxed' is the first definition.
(thesaurus)
'additive-free' is the second definition.
(I've seen this before)
'being' is the link.
(Other definitions for natural that I've seen before include "Illegitimate" , "Unvarnished" , "Unrefined person" , "chemical-free" , "Normal - innate - instinctive" .)