(if this section is not related to this, I would like to ask the moderators to move this thread to the appropriate category)
For 18-60 year olds
STEP 1 - Evaluation:
The very first thing you should do is go to a dermatologist and ask for an evaluation including a blood test (dht & free testosterone) to figure out what is causing your hair loss and if you have high levels of dht.
Your doctor will most likely give you a prescription: finasteride 1mg daily (or dutasteride 0.5mg if you have diffuse thinning, or a combination of both) & minoxidil 10% with azelaic acid which is a more potent agent.
STEP 2 - Preparation:
While you are on finasteride/dutasteride & minoxidil, you will have to book with a top surgeon, like FueExpert, De Freitas, or Pinto, as there are long waiting queues and it might take up to 2-3 years to get an appointment. Be prepared to do more than one operation, if needed. This is perfect because by the time you will have the operation, your hair will be thicker and you will gain some ground back.
STEP 3 - Optimise:
There are plenty of anecdotal reports that RU58841, Breezula, or Castor Oil may improve your condition, but don't go crazy over these options.
What you need to do is buy a dermaroller (ideally 1.0mm long , use it 3x/week but not too hard, you need to have plenty of time to heal between each session, also wait for 30 minutes before you apply any topicals). In addition to that, make sure you do not have any vitamin deficiency, (if you have an issue get a supplement with iron, zinc, vitamin B6 & D3, extracts are not necessary). You also need to use a good 20mg/g Ketoconazol shampoo 3x/week, the rest of the days just use a normal one, don't go crazy here either.
STEP 4 - Optimise more:
You may want to add an early PRP session, alongside with a good LLLT cap, one with. >270 diodes, 3x/week for 30 minutes or so.
Make sure you are consistent with these. When the day of the operation comes, be loud and clear regarding your dream hairline. You might want to use beard hair for the crown part, or do micropigmentation around your donor area, if it is too depleted. I would expect to move down one level from the medication (i.e. if you are NW3 -> NW2, within 2.5 years) and another 1.5 level with each transplant session that you take. It is likely that you will land with a NW1 or NW0 after 5-6 years, maybe sooner if you are a little above average, maybe way sooner if you are a hyper responder.
Good luck, never give up.