April 2026 in “Biosaintifika Journal of Biology & Biology Education” Hypoxia-induced MSC exosomes may boost hair growth in alopecia.
Tissue from dog stem cells helped grow hair in mice.
Azelaic acid and vitamin B6 together may improve hair growth.
February 2001 in “Chinese Journal of Dermatology” Epidermal growth factor (EGF) boosts the growth of hair follicle cells.
November 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” The article concludes that creating a detailed map of normal human skin at the single-cell level is important.
44 citations
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March 2004 in “Journal of Investigative Dermatology” The effects of estrogen on human hair growth are unclear and need more research.
3 citations
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February 2025 in “Journal of Investigative Dermatology” Lipocartilage is a new type of tissue that affects hair growth and cartilage regeneration.
April 2021 in “Journal of Investigative Dermatology” Bacteria can help skin regenerate through a process called IL-1β signaling.
252 citations
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January 2008 in “Trends in Endocrinology and Metabolism” Melatonin in the skin helps protect against damage from stress and UV rays, and could be used to treat certain skin conditions.
129 citations
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May 2015 in “Cell Stem Cell” Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.
47 citations
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May 2002 in “Journal of Cutaneous Medicine and Surgery” Pregnancy can cause normal skin changes that usually go away after childbirth and don't need treatment.
15 citations
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May 2017 in “Journal of Cellular Biochemistry” The hairless protein is important for skin, hair, and may influence cancer development.
241 citations
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January 2001 in “Reviews on Environmental Health” High selenium exposure can harm thyroid function, immune system, liver, skin, and may increase neurotoxicity and cancer risk.
96 citations
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January 1997 in “Clinics in Dermatology” Pregnancy can cause skin pigmentation, stretch marks, and changes in hair, nails, and sweat glands, with most resolving after birth.
17 citations
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May 2015 in “Nanomedicine: Nanotechnology, Biology and Medicine” Scientists created tiny particles loaded with a hair growth drug, minoxidil, that specifically target hair follicles and skin cells to potentially improve hair growth.
2 citations
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September 2016 in “Journal of Dermatological Science” Squarticles, tiny particles made from sebum-derived lipids, can effectively deliver minoxidil, a hair growth drug, directly to hair follicles and skin cells, with less skin penetration and more tolerability.
November 2022 in “Journal of Investigative Dermatology” The extract of Silybum marianum, Manganese PCA, and Lespedeza capitata can boost hair growth and extend the growth phase when combined in a serum.
September 2022 in “The Egyptian Journal of Hospital Medicine” Microneedling is an effective, safe, and affordable method to treat skin conditions like scars and wrinkles.
April 2021 in “Current Topics in Nutraceutical Research” Citron seed oil may help prevent or treat hair loss by promoting hair growth and increasing hair density.
January 2007 in “The Year book of surgery” Mast cells and VEGF contribute to post-surgery adhesions, and blocking VEGF can reduce these adhesions; also, certain factors affect wound healing and fetal skin heals differently with age.
January 2006 in “The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology” Rubus coreanum may help hair growth but not through the tested mechanisms, and none of the herbal extracts help with acne.
Finasteride and luteolin may help promote hair growth.
27 citations
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March 2006 in “Journal of cosmetic dermatology” HRT helps improve skin issues caused by menopause.
21 citations
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December 1994 in “British Journal of Dermatology” Sheep dermal papillae can help form hair follicles in skin models.
20 citations
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May 2020 in “Experimental Dermatology” Aging scalp skin contributes to hair aging and loss, and more research is needed to develop better hair loss treatments.
4 citations
,
January 2021 in “in Vivo” Scoparone may help stimulate hair growth by increasing stem cell-related proteins in skin cells.
8 citations
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September 2016 in “Reviews in Endocrine and Metabolic Disorders” Skin health and diseases are closely linked to metabolic processes.
60 citations
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April 2012 in “Physiology” The document concludes that understanding hair and feather regeneration can help develop new regenerative medicine strategies.
November 2022 in “Journal of Investigative Dermatology” Growth hormone-releasing hormone (GHRH) boosts hair growth and human scalp hair follicles have their own growth hormone system.
Sheep can lose wool quickly due to stress, but it doesn't cause itching or pain.