October 2012 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Thymic peptides can either promote or inhibit human hair growth.
October 2025 in “International Journal of Advanced Multidisciplinary Research and Studies” Hairless dogs have unique skin adaptations to regulate temperature and protect against environmental factors.
16 citations
,
November 2022 in “eLife” Both gene and non-gene areas of DNA evolved to make some mammals hairless.
58 citations
,
April 2009 in “Dermatologic Surgery” Most women have a widow's peak and specific hairline features useful for designing hair restoration surgery.
21 citations
,
January 1999 in “Endocrine” 124 citations
,
April 1992 in “Journal of Endocrinology/Journal of endocrinology” Beard hair follicles have more androgen receptors than non-balding scalp hair follicles.
1 citations
,
January 2018 in “Acta dermato-venereologica” A teenager's hair with alternating white and dark bands, known as Pili annulati, is a genetic condition that is usually harmless and often considered attractive.
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.
July 2019 in “Journal der Deutschen Dermatologischen Gesellschaft” A mother and daughter have a rare genetic hair loss disorder with no effective treatment.
58 citations
,
March 1985 in “Journal of The American Academy of Dermatology” The document concludes that electrolysis and thermolysis can permanently remove hair but calls for better regulation to ensure safety, and notes a possibility of hair regrowth and rare complications.
139 citations
,
July 1991 in “Journal of The American Academy of Dermatology” Understanding hair follicle anatomy helps diagnose hair disorders.
21 citations
,
April 2019 in “Clinical, cosmetic and investigational dermatology” The document concludes that stopping shaving or removing affected hair can alleviate Pseudofolliculitis barbae (PFB).
October 2025 in “Journal of Investigative Dermatology” Hair follicle dermal stem cells help control hair growth timing by regulating signals at the hair germ–dermal papilla interface.
82 citations
,
May 2005 in “Dermatologic therapy” Laser hair removal has advanced to effectively reduce hair for various skin types and hair colors.
49 citations
,
July 2019 in “British Journal of Dermatology” Wnt signaling is important for the change from the resting phase to the growth phase in human hair cycles.
January 2026 in “Updates in clinical dermatology” 20 citations
,
January 2010 in “Biological Trace Element Research”
1 citations
,
February 2009 in “Journal of Investigative Dermatology” Lipase H is important for hair follicle function and shaping hair fibers.
11 citations
,
February 2002 in “International Journal of Cosmetic Science” Recent findings show that hair growth and color are controlled by a complex network of signals in the hair follicle.
January 2012 in “eScholarship (California Digital Library)” Hair and nails contain stable RNA, useful for personalized medicine and screening.
2 citations
,
March 2023 in “JAAD case reports” Hair repigmentation can indicate malignancy and should be investigated.
4 citations
,
January 2019 in “Micron” Fetal hair follicles have melanocytes with melanosomes at different stages, which are broken down into pigment particles in keratinocytes.
15 citations
,
January 1988 Hair follicles have unique proteins that vary by species and are influenced by nutrition.
September 1998 in “Journal of the European Academy of Dermatology and Venereology”
14 citations
,
October 2020 in “Scientific reports” Hair greying is linked to reduced ATM protein in hair cells, which protects against stress and damage.
December 2015 in “European Journal of Pediatric Dermatology” Newborns can experience temporary hair loss in bands, unrelated to sleeping position.
4 citations
,
November 2020 in “BMC Dermatology” Researchers identified genes in scalp hair follicles that may affect hair traits and hair loss.
4 citations
,
January 2021 in “Acta Dermato Venereologica” Titanium nanoparticles may trigger frontal fibrosing alopecia, so avoid products with them.
100 citations
,
November 1997 in “Human Genetics” A new mutation in the hHb1 keratin gene is linked to the hair disorder monilethrix.