I have this problem as well so here is a pretty much comprehensive list of your options.
Non-surgical:
Finnesteride: type 2-alpha reductase inhibitor: Inhibits enzymes that create DHT a androgen correlated with hair loss. This will reduce dht levels by around 70%
Dutasteride: Only available in Korea and Japan legally for hair loss. Used to treat Benign prostate hyperplasia in the united states and other countries. Inhibits Type 1 and type 2 alpha reductase enzymes. Will lower DHT levels by around 90% and has much greater results and greater side effects than finnesteride.
Minoxodil: AKA Rogaine, will grow back some hair and make "vellus"(thin light) hairs thicker.
HRT: The antiandrogens will lower your testosterone and dht levels and can have an effect similiar to dutasteride when used. Early on in your therapy you are likely to have your new hair that grows in fall back out though.
PRP: Platelet rich plasma. They draw out some blood stick it in a centrifuge and seperate the platelet rich plasma from the rest of your red blood cells and plasma. Then it is injected into the scalp. It works because there are about 20 growth factors which speed cell growth in the prp.
There is a lot of research lately supporting this and an effective treatment for hair loss but you are looking at about at least 4 months of treatment 1/month at around 800$ each.
Prp with acell or Prp with ecm: The are both the same thing basically. Its prp with a bunch of stem cells. Typically around $2500 for a treatment and most people only need one treatment and lasts 2-5 years, but possibly more. Its been around since 2011 so its hard to put a hard number on how long it will last especially when you don't have any androgens in your blood tearing down your follicles anymore.
Surgical:
Hairline advancement: surgically advances the heir line by cutting off about an inche of forehead skin the sutureing the skin back together. Typically advances scalp line by around .75-1 inch. Around $3000.
Hair transplant: Takes hairs from the back of the head and transplants to the top of the head. Limited by donor on the back of the head. Results are highly dependent on the skill of the surgeon. Your can only have one hair transplant a year and it takes 6-18 months to regrow in. Some baselines:For 1-2 inches of recession think 2-3k grafts. For first half recessed think 4-5k grafts. For horseshoe you are looking at at least 6k grafts and may still have limited results. Most surgeons cap out at around 3.5k grafts in a single surgery. Hasson and Wong in Vancouver and Natural hair transplants in Florida specialize in mega sessions for 5k+ grafts in a single surgery. Think around 5$ a graft generally.
Future stuff:
Take this with whatever skepticism you like. So 2016 has been like the most amazing year for hair regeneration research in the history of forever.
Super simplified explanation of hair growth. You have stem cells at the bottom of your hair follicle those turn into progenitor cells and those progenitor cells turn into hair cells.
One big thing that happened around june-ish 2016 was University of Philadelphia measured the amount of stem cells and progenitor cells in miniaturized(dead hair follicles) and healthy hair follicles and found that the number of stem cells was the same in the dead vs living follicles, but that the progenitor cells were almost all gone in the dead hair follicles, while normal in living follicles.
The paper I was referring to:
http://www.uphs.upenn.edu/news/News_Releases/2011/01/male-pattern-balding-stem-cell-inactivation/Future treatments:
Within the next 4 or so years a ton of new treatments will be coming out some of them having the potential to completely cure angrogenic alopecia(Male pattern baldness). The two huge ones are Shiseido and Replicell vs Kyocera and Team Riken lead by Dr. Tsuji.
More about this here:
http://www.hairlosscure2020.com/so-its-shiseidoreplicel-versus-rikentsuji-at-the-kobe-biomedical-innovation-cluster-kbic/Anyways there are a lot of companies that are targettign releases for their hair regeneration products in 2018-2020. Its honestly too many to name. If I explained them all it would take 5k words.
Here are some products to look into if you are interested though.
Shiseido/Replicell's stemcell treatment (Target window 2020 for release in Japan)
Kyocera/TeamRiken's stem cell treatment (Target window 2017 for release in Japan)
Histogen (Target window 2018 for release in Mexico)
Follica (Target window 2018 for release)
All release windows have been stated as their are best case scenarios for release.
All of these are already in or working or starting final stage trials for commercialization and have already shown in their previous studies to be much more effective than Minoxodil and Propecia.