Dark purple complexion 

The face contains all the details of your life as well as your health.  When you compare pictures you took at your different ages, the complexion in each picture will remind you of all the good or bad parts of your life.  We can gather many pieces of information from the face by instinct or experience.  

Huh Im, a Korean doctor in the 1600s, prescribed treatment points for dark purple complexion:

LV 2  행간

LV 4  중봉

BL 23  신유

BL 18   간유 

LU 5    척택 

LI 4   합곡 

ST 36   족삼리