If you’re a gentleman who’s been noticing a receding hairline or is worried about balding, the first step is to schedule a visit with a doctor or dermatologist and make sure your hair loss isn’t a sign of a more serious health issue. “Not all hair loss is male-pattern hair loss,” explains Dr. Marc Glashofer, a board-certified dermatologist specializing in hair loss and practicing in northern New Jersey. A thyroid disorder, an autoimmune disease, or even a scalp issue could be making you look like Bruce Willis in Die Hard 2. But most hair loss is androgenetic alopecia, also known as male-pattern baldness, and fortunately (or not, depending on your perspective), it’s just a symptom of getting older.
The most common form of hair loss is androgenetic alopecia, or, in other words, male or female pattern baldness or hair loss. Androgenetic alopecia is genetic and affects an estimated 50 million men and 30 million women in the United States. Among white women in the U.S., an average of 19% are affected by female pattern hair loss, but that percentage increases with age. The prevalence is nearly doubled in Australia at 32% and much lower in Korea and China at < 6%. As of 2015, no studies had been done on the prevalence of female pattern hair loss in Brazil or Africa.

Harklinikken does not advertise, but the 25-year-old multinational company is beginning an aggressive expansion into the $3.6 billion hair-loss market in the United States, meaning you’re likely to hear a lot more about it. A New York clinic opened in June inside the Core Club in Midtown (you don’t need to be a member to get an appointment); and in August, Harklinikken consultations became available at some 70 Women’s Care Florida obstetrics and gynecology clinics. (Roughly 75 percent of the company’s 50,000 active users are female.)
You might be wondering why there are so many men walking around with significant hair loss, especially considering there are a number of remedies out there that can slow down or stop male pattern baldness completely. The biggest reason is a lack of education about which hair loss treatments actually work. There’s a lot of misinformation out there regarding hair loss remedies, and most of it’s from armchair experts who boldly claim that their all-natural, homeopathic methods are guaranteed to promote hair growth and stop baldness (spoiler alert: they don’t). 

Another method is to wear a hat or a hairpiece—a wig or toupee. The wig is a layer of artificial or natural hair made to resemble a typical hair style. In most cases the hair is artificial. Wigs vary widely in quality and cost. In the United States, the best wigs—those that look like real hair—cost up to tens of thousands of dollars. Organizations also collect individuals' donations of their own natural hair to be made into wigs for young cancer patients who have lost their hair due to chemotherapy or other cancer treatment in addition to any type of hair loss.

Women with androgenic alopecia may consider trying prescription ketoconazole at a strength of 2 percent. This drug comes in the form of a shampoo and also goes by the name Nizoral. It’s an antifungal agent and may help reduce the body’s production of testosterone and other androgens that lead to hair loss. You can also find 1 percent strength at your local pharmacy, but it may not be as effective.
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Propecia (finasteride) is a 5 alpha-reductase inhibitor. It works by inhibiting the conversion of testosterone into 5 alpha-dihydrotestosterone (DHT), a hormone that plays an important role in hair loss. Propecia is a prescription medicine and is only approved for use in men. There are other 5 alpha-reductase inhibitors on the market but Propecia is the only one approved for androgenetic alopecia.
The pull test helps to evaluate diffuse scalp hair loss. Gentle traction is exerted on a group of hairs (about 40–60) on three different areas of the scalp. The number of extracted hairs is counted and examined under a microscope. Normally, fewer than three hairs per area should come out with each pull. If more than ten hairs are obtained, the pull test is considered positive.[27]

Taking hair supplements can be helpful for anyone who is experiencing hair loss or hair thinning. Dendy Engelman, MD, a board-certified dermatologic surgeon at Medical Dermatology & Cosmetic Surgery in New York City, previously recommended Nutrafol, a research-backed hair supplement, to Prevention. "This uses highly concentrated botanicals to address every stage of the growth cycle," she says. Nutrafol's hair supplements include vitamin E and ashwagandha (an adaptogen that helps balance cortisol levels in the body), among others.
Also known as Rogaine, this over-the-counter (OTC) medication can be used for men or women with alopecia areata or androgenic alopecia. This drug comes in foam or liquid form and is spread on the scalp each day. It may cause more hair loss at first, and new growth may be shorter and thinner than before. You may also need to use it six months or more to prevent further loss and promote regrowth.
A good daily multivitamin containing zinc, vitamin B, folate, iron, and calcium is a reasonable choice, although there is no good evidence that vitamins have any meaningful benefit in alopecia. Newer studies suggest that vitamin D may be somewhat helpful and worth considering. Specific vitamin and mineral deficiencies like iron or vitamin B12 may be diagnosed by blood tests and treated.
I always advise clients to allow freshly washed hair to air dry until half dry at least once a week. By blow drying for just 50% of the time, you reduce the impact of heat styling without compromise on finish. Small change big difference over a year. We say, “Go Low Low” – use low heat and low speed, it’s the best way to work with a curl to achieve definition and the best route to a frizz free finish on a sleek straight look. Pick a hair dryer that works harder for you too – beyond just drying. My Infrared PRO hairdryer dries from the inside out, so it locks in moisture to keep that glossy finish, while the speed at which it dries minimizes the disturbance to the follicle and thus keeps frizz at bay too.

Men’s Rogaine Extra Strength Solution is the liquid version of our top pick. It didn’t make our final cut because it includes propylene glycol, which causes irritation in roughly one-third of its users. With that said, Dr. Wolfeld finds that it can be even more effective in practical daily use. In his experience, “the solution can penetrate and get into your scalp a little bit better” than the foam — especially if you’re not taking the time and effort to apply the foam correctly. This seems crazy to us since the foam so quickly dissolved into a liquid in our tests, but if you’re worried, try a one-month supply of the liquid and make the switch to foam if you notice any irritation.
There are several different types of medication you can buy to help treat hair loss. Procepia and Finasteride are currently the only approved drugs you can take that will effectively treat hair loss. The active ingredient in both treatments (finasteride) works by blocking DHT (the male hormone dihydrotestosterone) that causes hair loss by shrinking hair follicles on your scalp. It has been proven to lead to hair regrowth or to stop hair loss in around 9 out of 10 men in clinical trials. 
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