Men's hair loss products that work are not that common and are often lost in a sea of mediocre products. What follows are some products that were documented to be effective in treating male pattern baldness. 

Finasteride 

Finasteride goes by the brand names Hims and Propecia. An interesting fact about this drug is that it's not originally meant to solve hair loss. It was a product developed to treat benign prostate hyperplasia. But the FDA has also approved it to be marketed as a treatment for male pattern baldness. And based on the testimonials of many of its users, it's one of the best hair loss treatments you can get.

What it does is inhibit the conversion of testosterone to dihydrotestosterone or DHT. This is important because DHT can cause the hair follicles to shrink. When this happens, the hair becomes thinner. It also shortens the growth phase of hair. It comes to a point where the hair doesn't even grow past the scalp's skin. This kind of hair is known as vellus hair. They are the same short hair that grows in our bodies when we're young - short, thin, and light in color. The hair that typically grows in the head is known as terminal hair. It is longer, thicker, and has a more visible color. 

Finasteride doesn't only slow down the process of turning terminal hair into vellus hair, it can also reverse the process. It has been proven that by using finasteride for one year, you can see more terminal hair and less vellus hair on your head. 

Finasteride is taken orally. The recommended dosage is 1 tablet per day. Common side effects of the drug include weakness, dizziness, skin rash, and rhinitis. A small percentage of people who took the drug also experienced the loss of libido and erectile dysfunction. 

Minoxidil

Minoxidil is another popular hair loss medication, maybe even more popular than finasteride. And just like finasteride, minoxidil was originally developed to treat a different health problem. Originally, minoxidil was made to treat high blood pressure. Then it was discovered that one of its side effects is hair growth and the slow down of hair loss. So it was later approved and marketed as a hair loss remedy. 

The exact way minoxidil helps in promoting hair growth is not known. But there are many documented cases of the drug helping in the treatment of male pattern baldness. Experts believe that the drug is able to recruit hair follicles that are in the dormant phase and then encourages them to be in the anagen phase. The drug keeps them in that phase for a long time and this leads to the development of longer and thicker hair. 

And apart from boosting the growth factors, minoxidil also inhibits the negative factors. It also helps dilate the hair follicle arteries thus increasing the flow of blood to the follicle. This allows the follicle to get more oxygen and nutrients from the blood. Regular use of minoxidil leads to longer and thicker hair.

Minoxidil comes in different brand names. The most popular and also the most expensive is the original, which is Rogaine. But it also comes in other brand names such as Kirkland, Lipogaine, Foligain, etc. Rogaine is a topical solution and the recommended use is twice a day. Results are expected to appear after 2 to 6 months of regular use. 

Nanoxidil 

Nanoxidil comes with the brand name Spectral.DNC-N. It doesn't only sound like minoxidil it also works in a similar fashion to the popular drug. In fact, some studies suggest that nanoxidil may even be more effective than minoxidil. This is because it works using multiple mechanisms. It is also absorbed by the skin better thanks to it having a lower molecular weight. Some people are calling it an improvement of minoxidil. 

Another reason why many people prefer this drug over minoxidil is that it has fewer side effects. And its side effects are considered mild. They include redness and some itching. One of the best things about this drug is that it's not only effective in stimulating hair growth, it also helps in alleviating scalp inflammation. Nanoxidil comes in a spray form and is used twice a day. Results are expected after 3 to 6 months of regular use.