136 citations
,
June 2006 in “Journal of Dermatological Science” PDGF isoforms can promote and sustain hair growth.
116 citations
,
May 2013 in “Proceedings of the National Academy of Sciences of the United States of America” Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.
72 citations
,
February 2011 in “American Journal of Biological Anthropology” The conclusion is that recognizing hair growth cycles can improve the precision of dietary and health assessments from hair analysis.
71 citations
,
May 2007 in “The FASEB journal” Human hair follicles produce and respond to erythropoietin, helping protect against stress.
68 citations
,
March 1965 in “The BMJ” Hormones and genetics affect hair growth and patterns, with some changes reversible and others not.
63 citations
,
August 1996 in “Forensic Science International” Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.
63 citations
,
October 1972 in “British Journal of Dermatology” Women with thinning hair have thinner hair strands than women without hair loss.
56 citations
,
September 2013 in “Journal of Biochemistry and Molecular Biology” Androgens increase a growth factor in hair cells by creating reactive oxygen species, and antioxidants might help treat hair loss.
48 citations
,
May 2015 in “NPJ microgravity” A 3-month stay in space causes skin thinning, disrupts hair growth, and changes muscle-related genes in mice.
47 citations
,
January 2013 in “International Journal of Cosmetic Science” Hair diversity is influenced by complex genetics and environmental factors, requiring more research for practical solutions.
41 citations
,
December 2008 in “International Journal of Dermatology” South Korean women with hair loss have lower hair density and thickness compared to healthy women.
40 citations
,
May 2016 in “Proceedings of the National Academy of Sciences of the United States of America” Changes in keratin make hair follicles stiffer.
38 citations
,
October 2011 in “Analytical biochemistry” Hair proteins have weak spots in their α-helical segments.
36 citations
,
February 2017 in “BMC Complementary and Alternative Medicine” Geranium sibiricum extract helps hair grow and is more effective than minoxidil but can be toxic in high concentrations.
31 citations
,
February 2020 in “BioMed Research International” Thai people's hair density decreases with age and varies by scalp area, but hair thickness stays the same regardless of age or scalp area.
31 citations
,
September 1999 in “Dermatologic Surgery” Cooling hair micrografts during transplantation does not improve their survival or growth.
28 citations
,
December 2011 in “Biocatalysis and biotransformation” PDI helps restore over-bleached hair's strength and structure by attaching special peptides.
27 citations
,
January 2010 in “Animal” South American camelids should be sheared early, fleece type affects fiber quality, and the S/P follicle ratio doesn't distinguish between Bolivian llama genotypes.
26 citations
,
September 2018 in “Colloids and Surfaces B: Biointerfaces” A new liposome treatment helps heal deep burns on mice by improving hair regrowth and reducing scarring.
24 citations
,
January 2006 in “Skin Pharmacology and Physiology” Finasteride reverses early hair loss and promotes growth.
23 citations
,
January 2016 in “Theranostics” Minoxidil-coated microbubbles with sonication effectively enhance hair growth.
22 citations
,
December 1998 in “Dermatologic Surgery” A new storage solution may increase hair transplant graft survival.
21 citations
,
November 2017 in “Archives of Dermatological Research” Higher enzyme levels found in women with hair loss, suggesting hormone imbalance.
18 citations
,
November 2010 in “Journal of morphology” Antler velvet hair and body hair of red deer have different structures that help with protection and insulation.
18 citations
,
December 2009 in “Canadian Journal of Animal Science” The BMP2 gene is more active in the early growth phase of Cashmere goat hair and may affect hair regeneration and textile production.
16 citations
,
November 2020 in “International journal of pharmaceutics” Using longer PEG chains helps nanoparticles penetrate hair follicles better, improving drug delivery for conditions like alopecia.
15 citations
,
May 2017 in “Lasers in Medical Science” Low-level laser treatment helps mice grow hair by increasing certain protein levels linked to hair growth.
14 citations
,
July 2021 in “Biomolecules” Centipeda minima extract helps hair grow by activating important growth signals and could be a promising hair loss treatment.
14 citations
,
September 2018 in “Asian-Australasian Journal of Animal Sciences” Rex rabbits' hair follicles develop dynamically in the first 8 weeks, with key genes and proteins changing over time.
13 citations
,
January 2022 in “Stem cell reviews and reports” Mouse stem cells from hair follicles can improve wound healing and reduce scarring.