13 citations
,
October 2008 in “PubMed” Japanese women's curved hair has an uneven internal structure and varying amino acid composition.
May 2024 in “Regenerative Therapy” Dendrobium officinale polysaccharide helps hair growth by activating the WNT signaling pathway.
82 citations
,
January 2011 in “New Phytologist” VILLIN4 helps root hair growth by organizing actin with calcium.
23 citations
,
April 2004 in “American Journal of Ophthalmology” Using bimatoprost on one side of the face caused increased cheek hair growth in a patient.
15 citations
,
March 2004 in “American Journal of Ophthalmology” Using bimatoprost on one side of the face caused increased cheek hair growth in a patient.
January 2000 in “Europe PMC (PubMed Central)”
32 citations
,
December 1969 in “The Lancet” Children with marasmus have more resting hair follicles and thinner, less pigmented hair, showing long-term malnutrition.
18 citations
,
December 2002 in “European Journal of Biochemistry” MsPG3 protein gathers at root hair tips, aiding growth.
10 citations
,
June 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” FP-1 is a key protein in rat hair growth, active only during the growth phase.
25 citations
,
July 2004 in “Experimental Dermatology” Illicium anisatum extract may boost hair growth.
6 citations
,
April 2012 in “Journal of Oral Pathology and Medicine” Rushton's hyaline bodies form from hair keratin and blood substances.
30 citations
,
January 1999 in “Journal of Cutaneous Pathology” Spiny keratoderma may be ectopic hair formation on palms and soles.
5 citations
,
January 2009 in “International Journal of Trichology” Two siblings had a rare hair condition with banded hair, which doesn't need treatment.
4 citations
,
August 2023 in “Nature Communications” Mouse zigzag hair bends form due to a 3-day cycle of changes in hair progenitors and their environment.
April 2019 in “Agriculture and natural resources” 17 citations
,
May 2018 in “BMC genomics” Researchers found genes and microRNAs that control curly fleece in Chinese Tan sheep.
March 1956 in “Institutional Repositories DataBase (IRDB)” September 2002 in “대한피부과학회지” Koreans have lower hair density, larger hair diameter, and slower hair growth than Caucasians.
Hair follicle stem cells can be cultured, but better methods are needed for longer growth.
3 citations
,
February 2022 in “Frontiers in cell and developmental biology” A specific RNA molecule, circCOL1A1, affects the growth and quality of goat hair by interacting with miR-149-5p and influencing cell growth pathways.
December 2019 in “C&EN Global Enterprise” Thicker hair isn't always stronger.
17 citations
,
September 2005 in “International Journal of Dermatology” African hair is more fragile due to its unique shape and internal structure.
September 2025 in “British Journal of Dermatology”
98 citations
,
June 2008 in “Human mutation” A genetic change in the EDAR gene causes the unique hair traits found in East Asians.
117 citations
,
August 2005 in “Ultramicroscopy” Human hair's strength and flexibility vary by ethnicity, damage, and treatment.
5 citations
,
February 2020 in “Open Access Macedonian Journal of Medical Sciences” Hibiscus leaves extract can effectively promote hair growth.
1 citations
,
December 2021 in “Jurnal Insan Farmasi Indonesia” Pomade with 12% ethanol extract of Momordica charantia L. leaves promotes the most hair growth.
7 citations
,
July 2008 in “Experimental Dermatology” The study concluded that a protein important for hair strength is regulated by certain molecular processes and is affected by growth phases.
14 citations
,
May 1979 in “International Journal of Dermatology” Trichostasis spinulosa mainly affects the nose, with many tiny hairs in one follicle, possibly influenced by hormones and sunlight.
8 citations
,
April 2017 in “Journal of The Royal Society Interface” Giant axonal neuropathy changes the structure of keratin in human hair.