I have only used this twice, but in that short time of use, I believe my hair shedding has increased. In fact, immediately following the last use my hair seemed to be coming out more than I had seen prior to ordering the shampoo at all. Experiencing hair loss, thinning, or excessive shedding (especially for a woman) can be very distressing, and to purchase a product in hopes that it will help to curb or even reverse the issue only to find it exacerbates the problem is INCREDIBLY stressful. I was hopeful about this product, given the overall reviews, but I'm afraid to use this product even one more time, for fear of making my hair loss worse.

Signage for Shiseido Co. is displayed outside the company's headquarters in Tokyo, Japan, on Friday, Feb. 28, 2014. Shiseido, Japan's largest cosmetics maker, is under reform after posting losses due to weak domestic sales and an impairment loss on goodwill associated with Bare Escentuals, which it bought in 2010. Photographer: Kiyoshi Ota/Bloomberg
In their research, the doctors established a correlation between androgen hormones and hair loss. They found that for reasons not completely understood, some people are susceptible to androgens that attack the hair follicles, while others are not. “They found that the androgen hormone decimates the cell population at the base of the hair follicles,” Buckler said. “The hormone attaches to these cells throughout particular receptors and starts to attack.”

The main type of hair loss in women is the same as it is men. It's called androgenetic alopecia, or female (or male) pattern hair loss. In men, hair loss usually begins above the temples, and the receding hairline eventually forms a characteristic "M" shape; hair at the top of the head also thins, often progressing to baldness. In women, androgenetic alopecia begins with gradual thinning at the part line, followed by increasing diffuse hair loss radiating from the top of the head. A woman's hairline rarely recedes, and women rarely become bald.

Researchers from South Korea have identified a new peptide called PTD-DBM which exhibits wound healing and hair regeneration effects in preclinical studies. The research is being led by Professor Kang-Yell Choi of Yonsei University. Choi’s team identified the peptide PTD-DBM which targets a protein called CXXC5. The interaction of these two proteins leads to stimulation of the Wnt pathway, which then initiates hair follicle neogenesis. Choi hopes to develop this peptide further into a potential hair growth drug candidate. A research paper about these findings was put out by the team earlier this year. Source article about this development here.
In Vancouver, a Canadian company called RepliCel focusses on the hair follicle’s “dermal-sheath cup cells,” its C.E.O., Lee Buckler, explained. Buckler believes that DHT attacks these cup cells “like a parasite.” Like Histogen, RepliCel’s consumer product would be an injectable. The company would generate new versions of your cup cells, which would be implanted into your “affected area”—the places where your hair has fallen out. Boom: new hairs. (Theoretically.)
What’s equally frustrating for women is that their hair loss is not as clearly understood as hair loss in men and, according to an article in www.dermentz.org, “..presents itself quite differently from the more recognizable male pattern baldness which usually begins with a receding frontal hairline that progresses to a bald patch on top of the head.” The same article also says that it’s uncommon for women to follow a male pattern unless there is excessive production of androgens in her body.
I’d come to think that the simplest answer was the right one: this was regular male-pattern baldness, elaborately covered up. But the Air Force One incident only deepened the mystery. What kind of hair afflicted by male-pattern baldness rises in the back? I suddenly had no idea which parts of his head contained which hairs. Watching the flaps on the back of his head shoot up again and again, I became unmoored in my beliefs.
This super-clean (and paraben- and sulfates-free, non-GMO, and vegan) shampoo zones in on the hair-saving supplement you’ve been hearing about for years: biotin. Nature’s Gate pairs its key ingredient with bamboo, a silica-packed scalp cleanser, and follicle-fortifying pro-vitamin B5. “I have thin hair that was breaking off and clogging my drain,” one reviewer wrote on Amazon. “No longer ... I may not have thick hair but it is stronger after using this shampoo.”
In II Kings 2:23-24, the prophet Elisha is mocked by a gang of surly kids. The kids “said unto him, ‘Go up, you bald head! Go up, you bald head!’ ” Elisha “cursed them in the name of the Lord.” Promptly “two she-bears came out of the wood and tore forty-two of them.” Sometime later—in 2013—German researchers published a study indicating that men experienced hair loss as an “enormous emotional burden” that could lead to an “impaired quality of life” and “psychological disorders.” Inversely, one study has shown that people perceive men with bountiful hair as likely having big penises.
After a severe illness, I lost more than half of my formerly beautiful long hair. Since then, I've tried many shampoos claiming to encourage regrowth of healthy hair. Well, I found it! This shampoo really works. It smells great and has resulted in my hair being stronger and shiny; it no longer breaks easily and my hair stays on my head rather than in the hairbrush! Yay! Be sure to follow the instructions for use. A little goes a long way.
Jimenez, J. J., Wikramanayake, T. C., Bergfeld, W., Hordinsky, M., Hickman, J. G., Hamblin, M. R., & Schachner, L. A. (2014). Efficacy and Safety of a Low-level Laser Device in the Treatment of Male and Female Pattern Hair Loss: A Multicenter, Randomized, Sham Device-controlled, Double-blind Study. American Journal of Clinical Dermatology, 15(2), 115–127. 

Other options include microneedling ($1,200 and up per treatment) and platelet-replacement therapy (also $1,200 and up per treatment), which are usually offered in conjunction. Your scalp will be numbed first so you don’t feel the pinpricks involved in microneedling. They promote hair regeneration by spurring wound healing, and platelet-replacement therapy involves injecting growth factors into those wounds. “Combination therapy typically works better than monotherapy and usually yields results after three monthly treatments,” says Sadick, and should be teamed with an at-home minoxidil treatment.
A healthy scalp might be your ticket to improving overall fullness and density. Nioxin’s cleanser rinses away excess sebum, fatty acids, and other disruptive scalp residue, while also coating strands with BioAMP, a signature blend of amino acids and conditioners that aim to thicken and repair damaged hairs. “This is the best thing I've tried for my hair,” one Ulta reviewer commented. “It's very thin (genetics) and used to fall out in (what I'd call) clumps. I'm not seeing anywhere near as much hair all over the furniture, floor, sink, clothes. It's fabulous.”
Dupilumab is FDA approved for treating eczema aka atopic dermatitis and sold under the brand name Dupixent.  As the story goes, a patient with alopecia totalis (a form of areata which leaves a person’s head completely bald) was being treated for eczema by the drug Dupixent. After 6 weeks the patient first began to notice progress in terms of hair growth and at 7 months she had noticeable pigmented hair growth on her scalp. Notably, the patient stopped taking the dupilumab for a period of time and noticed her growth subsided; when she began taking the drug again the hair improved once more. This provides another useful therapy option for patients seeking treatment for AA. One would imagine a topical version would be worthwhile to investigate.
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