18 citations
,
April 2002 in “Journal of cutaneous pathology” Tiny infundibular cysts are the main lesions in chloracne, not comedones.
March 1997 in “Medical Molecular Morphology” Zinc deficiency causes early scalp hair damage that recovers slower than skin symptoms.
January 2026 in “Frontiers in Animal Science” Gentile di Puglia sheep have finer wool and more lanolin than Sarda sheep.
25 citations
,
May 1972 in “Canadian journal of zoology” Black-tailed deer have four types of pelages and molt twice a year.
46 citations
,
April 2009 in “Journal of Dermatological Case Reports” Researchers established normal hair and scalp characteristics for healthy women using trichoscopy.
8 citations
,
May 2005 in “The American journal of dermatopathology/American journal of dermatopathology” The hair defect is due to abnormal inner root sheath keratinization.
3 citations
,
September 2024 in “The FASEB Journal” Dermal white adipose tissue helps regulate hair growth, protect skin, and aid wound healing.
October 2025 in “HAL (Le Centre pour la Communication Scientifique Directe)” Variegated coat color in cats is linked to the Silver locus.
3 citations
,
January 2018 in “International Journal of Trichology” The new system helps detect and track early female hair loss better.
30 citations
,
January 2014 in “Annals of Dermatology” Scalp dermatoscopy helps diagnose and monitor hair loss severity.
December 2018 in “European Journal of Pediatric Dermatology/PD. European journal of pediatric dermatology” Segmental vitiligo affects hair follicle melanocytes, causing small, uniform depigmented spots.
17 citations
,
January 2011 in “Skin Research and Technology” Hair from people with seborrheic dermatitis is thicker scaled, more damaged, and thinner than healthy hair, and atomic force microscopy can help monitor the condition.
14 citations
,
September 2017 in “General and comparative endocrinology” Barn owls with smaller black spots have higher testosterone levels, which might be due to genetic effects on hormone regulation rather than hormone effects on coloration.
20 citations
,
April 2002 in “PubMed” Mini rats have thinner skin, more fat, and different hair cycles than Wistar rats due to lower growth hormone levels.
Using aluminum foil for hair bleaching gives better copper blonde color.
7 citations
,
February 2023 in “Journal of Dermatological Treatment” The Scalp Photographic Index (SPI) is a reliable tool for assessing scalp conditions.
June 2023 in “International Journal of Dermatology” Lichen planus pigmentosus mainly affects middle-aged women with darker skin, is underreported, and is hard to treat.
6 citations
,
September 2018 in “ACS applied bio materials” Calcium fatty acid deposits found in human hair can change its appearance and feel.
July 2024 in “Skin Appendage Disorders” Early detection of scalp signs can prevent permanent scarring in Lichen Planopilaris.
December 2017 in “JURNAL FARMANESIA” Red dragon fruit peel extract can effectively dye gray hair black.
1 citations
,
March 2017 in “Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego” Domestic cat hair varies in thickness and length, with guard hairs being longest and thickest, and all hair types mainly contain keratin.
2 citations
,
January 2017 in “Journal of Pigmentary Disorders” Vitiligo causes white skin patches and can lead to psychological stress.
8 citations
,
July 2014 in “Anais Brasileiros de Dermatologia” A man's scalp condition was misidentified as hair loss dots but was actually a common follicular disorder.
10 citations
,
January 1925 in “Archives of Dermatology” Trichostasis spinulosa is a rare skin condition with hair-filled plugs in hair follicles.
December 2011 in “Korean journal of veterinary research” A Miniature Pinscher dog with hair loss and scaling was diagnosed with pattern alopecia and improved with melatonin treatment.
7 citations
,
November 2014 in “Histochemistry and Cell Biology” The we/we wal/wal mice have defects in hair growth and skin layer formation, causing hair loss, useful for understanding alopecia.
1 citations
,
February 2025 in “Indian Dermatology Online Journal” Surgical treatments and topical tofacitinib may help with vitiligo-related eyebrow and eyelash whitening, but more research is needed.
Gray hair affects hair's movement and appearance, making it less bouncy and more wavy.
November 2024 in “Journal of Investigative Dermatology” Inherited ichthyosis negatively impacts quality of life, affecting daily activities, self-image, and reproductive decisions.
1 citations
,
April 2023 in “African Scientific Reports” Natural compounds can lighten skin by reducing melanin.