Rises in signs of aging? (9)
I believe the answer is:
increases
'rises' is the definition.
(rise can mean an increase in something)
'in signs of aging?' is the wordplay.
'signs of aging?' becomes 'creases' (creases in one's skin).
'in'+'creases'='INCREASES'
(Other definitions for increases that I've seen before include "Becomes greater" , "Becomes bigger" , "Gets bigger" .)