18 and want a hair transplant now (photo)

 I have had a V-shaped hairline since birth, but at the age of 18 I noticed that the temples were constantly getting larger. Initially, I was pleased with the results of finasteride since I was 17. The hair became thicker and darker. However, I feel like I’m losing what I’ve gained. I am planning a hair transplant in the near future, and I wonder if it makes sense to start my adventure with minoxidil now? I would delay HT if the effects were promising, but I am afraid of worsening. Regarding the HR, how many grafts will I need?

An 18-year-old male should only have a hair transplant if it is for an accident where you lost part of your scalp and are doing it for reconstructive purposes.  Your genetics seems to have kicked in already. Medications at your age, will likely reverse the corner recession your photo shows. If you have a hair transplant now, you will accelerate the genetics and lose all of the miniaturized hairs on your head, and the surgeon who would do it could be considered an unethical surgeon, one who just wants your money and doesn’t care about you.  You would waste your donor area hair.  You must wait until you are at least 25. Medications like finasteride and minoxidil might just keep your hairline where it is.  The slight corner recession your photo shows is barely detectable to the average viewer. It also shows some very fine hair that can be stimulated with minoxidil and finasteride with a high degree of certainty.