Most common cause for hair loss is so called androgenic alopecia which is determined genetically. Permanent stress and unhealthy diet are also factors that increases hair loss.
When it comes to men the process usually starts around the temples and forehead- commonly known as receding headline. During the next stage of hair loss you notice less hair on the tip of your head and after, the rest of your sculp.
When it comes to hair loss the most important step is not only to take care of symptoms but also examine the cause of the problem ! One of the most effective treatments that eliminates hair loss is needle mesotherapy: