Probably both. The truth is im not 100% certain but based on my experiences i have noticed lower dht symptoms like less oily skin and acne. However there are many things that lower DHT since modern medicine believe its the cause of balding like saw palmetto and even coffee just google it. Also another approach for oily skin is salicylic acid face wash and zinc oxide sunscreen. The zinc oxide as a thin layer on face doesnt make it produce excess oil. But what about prolactin, have you checked that because it also causes those symptomsSo it inhibits on the skin, but not in the body?