I have low hair density 18. Male. I've noticed 10 to 20 hairs falling everyday. (Photos)

In my opinion, you should visit a hair loss expert. They will perform a history and examination as well as possibly blood work. Treatment is based upon your diagnosis. Most likely you have androgenic alopecia. There are several good treatments. Finasteride, low level laser and minoxidil are FDA-approved and work well. We have seen good results in young individuals with PRP.PRP hair MD.com

It would appear you have androgenetic alopecia (male pattern balding) along with some degree of hairline maturation. You’ll want to speak to your physician about options and side effects. Minoxidil, finasteride, laser, PRP are options

Your biggest enemy is the progressive thinning leading to a balding pattern that may not evident at this point in time. The degree of thinning that you are experiencing would suggest that you should see a doctor who most likely will get Bulk Measurements of your hair to determine the degree of the thinning that you may be presently having. If the diagnosis is early genetic hair loss (the most common cause of hair loss in young men and you are probably following your families balding problem), then the best treatment would be the drug finasteride which is highly effective in men of your age and may not only stop the hair loss but possibly reverse it. If you are developing a more advanced balding pattern the best test to get is the HAIRCHECK instrument test which will determine the Bulk Measurements of your hair and this will show, over a one-year time frame, how effective the treatment will be or if you are not on drugs, using this instrument to tell you if you have ANY hair loss at all.  Once you know this information, then you and your doctor need to develop a MASTER PLAN which will define what you need