April 2019 in “C&EN global enterprise” A microneedle patch can help hair regrow.
May 2020 in “International Journal of Dermatology and Venereology” Calcified epidermal cysts are rare, hard skin nodules that are best treated with surgical removal.
January 1995 in “Equilibrium Research” Birds can regenerate inner ear hair cells from supporting cells, and mammals show potential for similar regeneration.
3 citations
,
January 2021 in “FEBS open bio” Camellia japonica extract may improve scalp health and promote hair growth.
5 citations
,
September 2020 in “Molecules” Extracts from three Polynesian plants were found to promote hair growth by affecting cell growth and gene expression related to hair.
2 citations
,
January 1990 in “PubMed” Perforating folliculitis is a skin condition with small bumps that may be linked to other diseases and is hard to treat.
118 citations
,
January 1992 in “Experientia” DPC-Exos can help regenerate hair follicles and heal wounds by activating the Wnt/β-catenin pathway.
112 citations
,
August 1984 in “Journal of Investigative Dermatology” 4 citations
,
January 1981 in “PubMed” Hair medullary cells in mammals vary in complexity, with humans having more structured cells similar to inner root sheath cells.
February 2026 in “Biomedicine & Pharmacotherapy” MLPH helps hair grow by activating IGF-1 signaling in hair cells.
14 citations
,
July 2016 in “Anatomical Science International” The study suggests that the arrector pili muscle is important for hair health and its damage might contribute to hair loss.
67 citations
,
January 1992 in “Journal of Investigative Dermatology” 16 citations
,
April 2021 in “Frontiers in Cell and Developmental Biology” New hair follicles could be created to treat hair loss.
86 citations
,
May 2002 in “Journal of comparative neurology” Nerve growth in mouse skin and hair follicles happens in stages and is closely linked to hair development.
15 citations
,
July 2004 in “Journal of morphology” Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.
12 citations
,
January 2000 in “Journal of cutaneous medicine and surgery” Microorganism overgrowth and hyperkeratosis may trigger immune reactions causing lichen planopilaris.
1 citations
,
April 2017 in “Journal of Investigative Dermatology” CCL5 is important for the hair growth potential of human dermal papilla cells.
31 citations
,
September 1996 in “Differentiation” The upper dermal sheath can regenerate hair in rats.
Keratinocytes grew and migrated into hair follicle areas but disappeared after 15-20 days.
8 citations
,
February 1968 in “Australian Journal of Zoology” The southern elephant seal's skin layer helps waterproof the skin by being tightly connected to hair shafts.
10 citations
,
April 1979 in “American Journal of Veterinary Research” Canine circumanal glands develop from hair follicle sheath cells, not sebaceous glands, and lack exocrine ducts.
118 citations
,
January 2004 in “European Journal of Cell Biology” Balanced protease activity is crucial for healthy skin and hair development.
9 citations
,
July 2014 in “PubMed” Different S100 proteins have specific roles in various parts of the hair follicle.
November 2025 in “Frontiers in Oral Health” Accurate diagnosis and management of rare genian fistulas require combined clinical, radiologic, and histopathologic evaluations.
32 citations
,
January 2014 in “Cells tissues organs” Hair follicle stem cells can help repair nerve and spinal cord injuries.
141 citations
,
November 2007 in “Journal of Investigative Dermatology” Balding cells age faster due to stress, suggesting stress-targeting treatments for hair loss.
January 2015 in “프로그램북(구 초록집)” A 25-year-old man had an unusual case of benign skin tumors and hair loss.
The research identified key molecules that help hair matrix and dermal papilla cells communicate and influence hair growth in cashmere goats.
14 citations
,
January 1988