38 citations,
July 2004 in “Journal of experimental zoology. Part B, Molecular and developmental evolution” Reptilian scales, feathers, and hairs evolved from changes in skin cell interactions.
Some dog skin mousse products with certain chemicals can prevent bacterial growth for up to 14 days, but effectiveness varies with hair length and product ingredients.
143 citations,
October 2008 in “Journal of The American Academy of Dermatology” Comma hairs are a specific sign of tinea capitis when viewed with videodermatoscopy.
107 citations,
April 2014 in “The Plant cell” The CAP1 gene helps control ammonium levels and is necessary for the proper growth of root hairs in Arabidopsis.
56 citations,
June 2010 in “Clinical and experimental dermatology” Coudability hairs are useful markers for alopecia areata activity.
52 citations,
April 2016 in “Journal of the American Academy of Dermatology” Certain black hairstyling practices increase the risk of traction alopecia, requiring better management and education.
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.
43 citations,
November 1988 in “The Journal of Comparative Neurology” Different types of hairs on a rat's hindlimb have varying levels and patterns of nerve innervation.
32 citations,
December 2003 in “Planta” Hypaphorine from a fungus changes the internal structure of Eucalyptus root hairs, stopping their growth.
26 citations,
January 1993 in “Dermatology” Exclamation mark hairs are not exclusive to alopecia areata.
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.
22 citations,
January 2012 in “International Journal of Trichology” Miniaturized hairs stay connected to muscle in alopecia areata, allowing possible regrowth, but not in androgenetic alopecia.
17 citations,
October 2003 in “Brazilian Journal of Medical and Biological Research” The gene SDR5A1 is found in scalp hair of both hirsute and normal individuals, but it does not explain differences in hair growth.
17 citations,
February 1987 in “Journal of the American Academy of Dermatology” The hair cuticle acts as a barrier against fungal infection, which occurs only deep within the hair follicle.
17 citations,
August 1979 in “Journal of The American Academy of Dermatology” A new staining method helps tell growing from resting hairs to diagnose hair loss.
16 citations,
July 2016 in “Journal of Dermatological Science” Regenerated hairs can regain their color if the wound occurs during a certain stage of hair growth, and this process is helped by specific skin cells and proteins.
15 citations,
November 2016 in “Journal of The American Academy of Dermatology” Exclamation mark hairs suggest early scalp disease, while white dots indicate it's chronic.
15 citations,
August 2015 in “Scanning” Corkscrew and cigarette-ash-shaped hairs in tinea capitis are caused by internal hair degradation and external resistance.
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.
13 citations,
January 2014 in “Postępy Dermatologii i Alergologii” Patchy alopecia areata can affect only pigmented hairs, leaving gray hairs untouched.
12 citations,
May 2018 in “JAAD Case Reports” A man's gray hair got darker and thicker after using a psoriasis drug.
11 citations,
July 2008 in “International Journal of Dermatology” Greying hairs may be protected from alopecia areata.
10 citations,
January 2013 in “International Journal of Trichology” More vellus hairs in frontal scalp indicate early female pattern hair loss.
9 citations,
September 2016 in “Dermatologic Surgery” New LPP subtype affects vellus hairs, mimics AGA, and needs biopsy for diagnosis.
8 citations,
June 2011 in “Nature Biotechnology” Stem cell treatments can potentially treat baldness, with one trial showing hair growth after injecting a hair-stimulating complex, and no safety issues were reported.
7 citations,
June 1967 in “Journal of Investigative Dermatology” Plucking hairs in a certain way can result in intact hair roots, not related to baldness.
6 citations,
November 2018 in “Dermatologic Therapy” Wearing a ponytail often is linked to hair loss at the front of the scalp in Chinese women.
5 citations,
November 2018 in “Skin appendage disorders” More kenogen hairs cause hair thinning in androgenetic alopecia, not hair miniaturization.
5 citations,
November 2012 in “Actas Dermo-Sifiliográficas” Comma hairs are a new sign for identifying scalp fungal infections.
5 citations,
January 2006 in “Indian Journal of Dermatology, Venereology and Leprology” Synthetic hairs are not recommended for use.