24 citations
,
January 1985 in “Dermatology” Higher levels of certain immune cells in hair follicles may contribute to alopecia areata.
6 citations
,
May 2021 in “Aesthetic Surgery Journal” Higher cell number PRP improves hair density and diameter more than lower cell number PRP.
13 citations
,
January 2013 in “Dermatologic Surgery” Experienced hair transplant surgeons suggest a limited number of hair follicles can be used for transplants, and recommend conservative methods to avoid scarring and depletion.
5 citations
,
November 2018 in “Skin appendage disorders” More kenogen hairs cause hair thinning in androgenetic alopecia, not hair miniaturization.
January 1999 in “Hair transplant forum international” The expected density of a hair transplant depends on the number of hair follicles transplanted and the thickness of the hair.
211 citations
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April 2013 in “Development” More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.
April 2010 in “Cancer Research” CDK4 levels affect the number of hair follicle stem cells in mice.
5 citations
,
January 2016 in “Dermatology” No significant link between CAG repeat numbers and female pattern hair loss in Han Chinese population.
1 citations
,
January 2022 in “Cell Biology International” Changing CDK4 levels affects the number of stem cells in mouse hair follicles.
The number of CAG repeats in the androgen receptor gene doesn't significantly affect female pattern hair loss in the Han Chinese population.
29 citations
,
June 1998 in “Developmental Biology” More melanoblasts in hair follicles mean better survival and proper hair pigmentation.
September 2019 in “Journal of Investigative Dermatology” Apple stem cell extract may increase the number of stem cells in a part of the hair follicle.
July 2007 in “Hair transplant forum international” Hair restoration procedures have become 34% more popular worldwide since 2004.
November 2023 in “Journal of Dermatological Science” A new computer tool quickly measures hair thickness differences in people with common types of hair loss.
1 citations
,
October 2025 in “International Journal of Molecular Sciences” Mutating the gmds gene in zebrafish increases hair cell numbers and regeneration.
10 citations
,
November 2010 in “Journal of Dermatology” Longer CAG repeats in gene linked to more severe hair loss in females.
6 citations
,
November 2012 in “Hair transplant forum international” The Laxometer helps make hair transplants with many grafts safer.
3 citations
,
April 2023 in “Veterinary sciences” Researchers found genes that may explain why some pigs grow winter hair, which could help breed cold-resistant pigs.
July 2009 in “Hair transplant forum international” Hair restoration demand increased by 26% from 2006 to 2009.
June 2021 in “Aesthetic Surgery Journal” PRP improves hair growth in AGA, but higher concentrations aren't significantly better than lower ones.
2 citations
,
December 2022 in “Journal of the European Academy of Dermatology and Venereology” More people are seeing dermatologists for hair and scalp problems now than in the past.
11 citations
,
September 1996 in “Journal of applied polymer science” Potassium cyanide treatment changes hair's disulfide bonds, making it more elastic.
2 citations
,
September 1996 in “Journal of Applied Polymer Science” Potassium cyanide changes hair's disulfide bonds to monosulfide, affecting high-sulfur proteins more.
1 citations
,
September 2022 in “Aesthetic Surgery Journal”
17 citations
,
February 2018 in “Journal of Cosmetic and Laser Therapy” The QR 678 hair growth treatment was safe and effective for hair regrowth in men and women.
11 citations
,
September 2012 in “Journal of animal physiology and animal nutrition” Higher protein diets with DL-methionine improve mink hair growth and fur quality.
3 citations
,
December 2019 in “Journal of Cosmetic and Laser Therapy” PRGF treatments increased hair number and thickness in people with hair loss, with more injections leading to better results.
February 2023 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” Aroma essential oils in shampoo may help prevent hair loss and promote hair growth.
April 2021 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” Eating raw cheonggukjang improves scalp hair in middle-aged women.