142 citations
,
February 1985 in “Fertility and sterility” Spironolactone reduced hair thickness and some testosterone levels in women with excessive hair growth.
131 citations
,
January 2018 in “Scientific Reports” Mycorrhiza helps trifoliate orange grow better roots and handle drought.
38 citations
,
January 2015 in “Journal of Cosmetic Dermatology” The nutritional supplement improved hair density and reduced hair loss in women with female pattern hair loss.
1 citations
,
December 2018 in “Journal of Cosmetic Dermatology” Men with thinner hair from genetic hair loss may be more likely to have an enlarged prostate.
December 2025 in “Actas Dermo-Sifiliográficas” Bicalutamide may improve hair growth in postmenopausal women with mild side effects.
Postpartum hair loss can reveal hidden hair loss conditions.
May 2023 in “Vestnik dermatologii i venerologii” Early-stage male pattern baldness shows two types of hair loss: one on the top of the head linked to hormonal changes, and another at the back of the head. The top hair loss responds well to specific treatment, while the back hair loss does not.
Some plant-based ingredients may help with hair growth and care, but more research is needed to confirm their effectiveness.
August 2013 in “Pharmacy Today” Viviscal may modestly improve hair loss in women without adverse effects.
August 2019 in “Journal of Dermatology” Woman with diabetes had hair loss due to rare ovarian tumor; surgery improved hair growth.
6 citations
,
December 2018 in “International Journal of Cosmetic Science” Mexican women's hair is between Asian and Caucasian hair in thickness and shape, with varied strength and some damage.
February 2020 in “International Journal of Research in Dermatology” Platelet rich plasma is not proven as a treatment for hair loss despite some improvements.
69 citations
,
April 1998 in “Journal of The American Academy of Dermatology” Single hair grafting is effective for treating small, localized patches of vitiligo.
46 citations
,
March 2019 in “Journal of Pineal Research” Melatonin improves cashmere goat hair growth and quality by increasing antioxidants and reducing cell death.
18 citations
,
November 2016 in “Transgenic research” Overexpressing Tβ4 in cashmere goats improves hair fiber traits and increases cashmere yield.
5 citations
,
April 2024 in “Animals” Younger cashmere goats produce more and better-quality fiber due to higher active hair follicles and antioxidant capacity.
March 2014 in “CRC Press eBooks” Human head hair can grow very long and is thicker than most body hair.
January 2007 in “Proceedings of the Korean Fiber Society Conference” New resin B makes artificial hair fibers hold curls longer than traditional resin A.
September 2001 in “PubMed” The new X-ray technique allows for precise and non-destructive measurement of elements in hair, creating the first database of its kind for a specific ethnic group.
March 1997 in “Medical Molecular Morphology” Zinc deficiency causes early scalp hair damage that recovers slower than skin symptoms.
October 2014 in “Springer eBooks” Rabbit hair fibers are similar to wool and have a hollow center like feathers.
25 citations
,
March 2017 in “Journal of Dermatological Treatment” Platelet-rich plasma treatment for non-scarring hair loss shows mixed results and needs more research.
14 citations
,
August 2013 in “Facial Plastic Surgery Clinics of North America” Some nonsurgical hair loss treatments are effective, especially if started early.
2 citations
,
May 2024 in “European journal of medical research” A special medium from stem cells significantly boosts hair growth and could help treat hair loss.
2 citations
,
January 2012 in “Charles Sturt University Research Output (CRO)” Pregnancy increases hair growth in dairy cattle.
June 2025 in “Dermatologic Surgery” GFC improves hair quickly, while PRP offers longer-lasting benefits; using both sequentially is recommended.
January 2025 in “Journal of Medicinal Food” Soybean extract may help hair growth in testosterone-related hair loss.
62 citations
,
February 2018 in “Scientia Horticulturae” Mycorrhizal fungi improve root hair growth and nutrient uptake in trifoliate orange, especially when phosphorus is low.
9 citations
,
July 2014 in “Skin research and technology” Stretching damages Caucasian hair's structure more easily than Asian hair.
2 citations
,
July 2009 in “Pharmacognosy Research” A herbal mix with chickpea, holy basil, and nut grass extracts grew rat hair well, similar to a common hair growth drug.