August 2018 in “Journal of Investigative Dermatology” Humans evolved to have less hair and more sweat glands than chimpanzees and macaques.
March 2020 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” The dermal sheath's contraction is crucial for hair follicle regression and stem cell relocation.
Sensory neuron remodeling and Merkel-cell changes in the skin happen independently.
3 citations
,
October 2021 in “Journal of Cosmetic Dermatology” Trichoscopy helps tell apart Frontal Fibrosing Alopecia and Lichen planopilaris by showing different hair and scalp features.
Sensory neuron and Merkel cell changes in the skin happen independently during normal skin maintenance.
The tool accurately measures hair count and size on scalps with 79.45% and 68.19% accuracy, respectively.
December 2025 in “Therya notes” Bats in Puebla, Mexico, show hair loss likely due to environmental stress from human activities.
38 citations
,
September 1997 in “The journal of investigative dermatology/Journal of investigative dermatology” A mutation in mice causes hair loss and skin issues due to a defect in a gene affecting cell adhesion.
17 citations
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August 2014 in “The Anatomical Record” Scaffoldin helps form hard skin structures in chicken embryos.
33 citations
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February 2009 in “European journal of pharmaceutics and biopharmaceutics” Pig ear skin is better than human skin for testing how well barrier creams block allergens from entering hair follicles.
8 citations
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March 2004 in “Mammalian genome” KAP genes are crucial for hair development and show both shared and unique traits in humans, chimpanzees, and baboons.
38 citations
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June 2005 in “Acta Biochimica Polonica” Splenic eumelanin in C57BL/6 mice is different from hair eumelanin.
11 citations
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January 2016 in “Biointerphases” The hair's outermost surface has multiple layers of lipids and proteins.
18 citations
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November 1998 in “Comparative biochemistry and physiology. Part A, Molecular & integrative physiology” Changes in prolactin and DHEA levels are not required for the start of mink hair growth cycles.
Genetic factors might cause fibrosing alopecia linked to hair shaft abnormalities.
36 citations
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September 1996 in “PubMed” DP and DS cells are different from DF cells in structure and function.
1 citations
,
August 2023 in “Genome research” The spiny mouse regenerates ear tissue asymmetrically, with gene expression differences possibly explaining its unique healing abilities.
13 citations
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September 2020 in “Sensors” Hair follicles have a pH gradient, increasing towards the root.
1 citations
,
July 2022 in “PLOS ONE” The study concluded that people with Lichen Planopilaris have a more diverse scalp bacteria and different metabolic pathways compared to healthy individuals.
April 2019 in “Journal of Investigative Dermatology” Calcium signals and SHH guide the direction of feather growth in chicken skin.
April 2018 in “Journal of Investigative Dermatology” Mutations in Far2 mice cause hair loss due to sebaceous gland issues.
1 citations
,
July 2023 in “Cureus” A rare hair disorder with multiple hairs from one follicle was found on a patient's abdomen.
November 2025 in “Bioengineering” The new method may improve skin grafts and hair 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.
41 citations
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January 2018 in “Advances in experimental medicine and biology”
September 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” Non-invasive methods can effectively monitor hair growth cycles, aiding hair loss treatment development.
51 citations
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May 1996 in “American journal of physiology. Regulatory, integrative and comparative physiology/American journal of physiology. Regulatory, integrative, and comparative physiology” Gray seals use more energy and have higher hormone levels during their annual fur-shedding period.
19 citations
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November 2018 in “Experimental Dermatology” The spiny mouse can regenerate its skin without scarring, which could help us learn how to heal human skin better.
5 citations
,
December 2018 in “Journal of The American Academy of Dermatology” Some hair products can create false signs on scalp examinations, leading to wrong diagnoses.
3 citations
,
November 1977 in “JAMA” Hair casts can be mistaken for lice, causing unnecessary stress.