Can Propecia Cause a Maturing Hairline?

i am a 25 yr old male, i was wondering if propecia can cause a maturing hairline, because of the increase of testosterone. i started saw palmetto 6 months ago and ever since my hairline has moved up and a very fast rate, i also had sheddind. i am unsure whether to start propecia or not as i dont know whether it will make my hairline mature faster or not

That is actually a very good question. DHT tends to move us to maturity (balding for some men), bringing on our beards, body hair, and other pubertal changes. As finasteride blocks some of the effects of DHT, one might think that it would be logical that it might slow down the appearance of the mature hairline (not cause it as you asked), but I have no direct knowledge on what it might do to the appearance of the mature hairline.