May 2018 in “Journal of Investigative Dermatology” Activating Wnt in skin cells controls the number of hair follicles by directing cell movement and fate.
April 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” A girl with excessive hair growth had a genetic change on chromosome 17 that reduced the activity of two genes linked to hair growth.
November 2022 in “Journal of Investigative Dermatology” The fragrance cyclohexyl salicylate helps promote hair growth and increase hair stem cell numbers.
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.
September 2024 in “Meditsinskiy sovet = Medical Council” As women age, hair follicles decrease in number and hair width tends to reduce.
34 citations
,
July 2006 in “The Journal of Comparative Neurology” Increasing neurotrophin 4 in skin boosts nerve endings but not sensory neuron count.
47 citations
,
September 2008 in “British Journal of Dermatology” Ludwig pattern hair loss in women results from varying sensitivity in hair follicles, causing fewer visible hairs.
January 2009 in “The Year book of dermatology” Ludwig pattern hair loss results from varying androgen sensitivity, causing fewer thick hairs and more thin hairs.
441 citations
,
May 1996 in “Journal of Cell Science” Keratin 19 helps identify skin stem cells, with its presence varying by body location, age, and culture stage.
10 citations
,
June 2005 in “Small ruminant research” Melatonin treatment may increase cashmere production in Spanish goats.
8 citations
,
April 2023 in “Advanced materials” Using blood-based implants improves skin healing and reduces scarring.
24 citations
,
February 2007 in “International Journal of Dermatology” A woman with cervical cancer had rare scalp metastasis causing a unique type of hair loss.
Wild African goats have genetic adaptations for surviving harsh desert conditions.
1 citations
,
April 2017 in “Journal of Investigative Dermatology” SM04554 may increase hair growth as a topical treatment for androgenetic alopecia.
November 2025 in “Phytomedicine” Modified Changfa Zirong Powder improves hair growth in androgenetic alopecia.
PRP injections effectively improve hair growth in androgenic alopecia.
January 2023 in “Iranian Journal of Pharmaceutical Research” Stauntonia hexaphylla extract can help treat hair loss by blocking certain hormones.
January 2024 in “Journal of Cosmetic Dermatology” Microneedling combined with other treatments significantly improves hair growth in people with hair loss and is safe.
September 2011 in “대한미용학회지” Dansam-Samultang promotes hair growth and prevents hair loss.
April 2023 in “Experimental Dermatology” Human dermal papilla cells can increase hair thickness and number in pigs with just one injection.
32 citations
,
December 2013 in “Biological & Pharmaceutical Bulletin” Rice bran extract can potentially treat hair loss by promoting hair growth and increasing the number of hair follicles.
April 2023 in “Chinese Medical Journal” Human hair follicle stem cells help repair tendon injuries.
June 2023 in “Sains Malaysiana” Cinchonine Nanostructured Lipid Carriers serum safely and effectively stimulates hair growth and increases the number and size of hair follicles.
86 citations
,
December 2001 in “Experimental dermatology” Mutant mice help researchers understand hair growth and related genetic factors.
14 citations
,
February 2021 in “Experimental Dermatology” Cannabinoid receptor-1 signaling is essential for the survival and growth of human hair follicle stem cells.
23 citations
,
April 1999 in “Dermatologic Clinics” Pulsed-intense light can significantly reduce hair, with effectiveness depending on treatment number and timing, and has mild side effects.
3 citations
,
December 2013 in “American Journal of Dermatopathology” A rare skin growth in a baby was successfully removed without coming back.
December 2020 in “한국인그리에학회지” Astringent persimmon fruit extract may help hair grow longer and cover more area without increasing the number of hair follicles.
April 2026 in “Biosensors” Red light increases hair follicles and ATP in mouse skin.
33 citations
,
April 2020 in “Journal of Clinical Investigation” Stress in hair follicle stem cells causes inflammation in a chronic skin condition through a specific immune response pathway.