Aside from medication and lasers, some opt for hair transplants — a procedure where hairs are removed from another part of your body and then transplanted to the thinning or balding areas. Does it work? In a word, yes. Research suggests that most hair transplant recipients report are "very satisfied" with their results. While successful, transplants are also far more expensive than medications, foams, or lasers with costs averaging anywhere from $4,000 or $15,000.
For as long as men have been fretting over their expanding foreheads, they've been scrounging for hair loss treatments. From hippo fat pomades to the urine of young foals, history is full of just-so-crazy-they-might-work concoctions. They didn’t work. And a quick Googling reveals that most of the products and services marketed today are only slightly less absurd.
Why? Unwanted hair growth (sideburns, for example) is a reported side effect of minoxidil. The belief is that a higher concentration of minoxidil would result in more unwanted hair, which is why women are instructed to use it less often. However, the study in Skin Therapy Letter reports that unwanted hair was more common in 2 percent minoxidil solutions than 5 percent, and women are instructed to use Rogaine’s 2 percent solution twice daily — so what gives?
In either sex, hair loss from androgenetic alopecia occurs because of a genetically determined shortening of anagen, a hair's growing phase, and a lengthening of the time between the shedding of a hair and the start of a new anagen phase. (See "Life cycle of a hair.") That means it takes longer for hair to start growing back after it is shed in the course of the normal growth cycle. The hair follicle itself also changes, shrinking and producing a shorter, thinner hair shaft — a process called "follicular miniaturization." As a result, thicker, pigmented, longer-lived "terminal" hairs are replaced by shorter, thinner, non-pigmented hairs called "vellus."