Botulinum toxin type A significantly reduces scalp psoriasis severity compared to placebo.
January 2012 in “Human health handbooks” Low-level light therapy is FDA-approved for male pattern hair loss, increases hair count and strength, and is considered safe for use.
October 2003 in “Journal of Investigative Dermatology Symposium Proceedings” Mice treatments didn't grow hair, a patient treatment may affect immune response, and people with hair loss often feel anxious or depressed.
June 2026 in “Nano Research” 3D bioprinted skin using liver cell exosomes helps heal wounds better.
January 2021 in “Middle East journal of applied sciences” Zinc is essential for plant growth and human health, but many soils lack enough zinc, affecting crops and potentially leading to health problems.
July 2024 in “Journal of Investigative Dermatology” Human hair follicles have their own thyroid hormone system.
15 citations
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April 2022 in “Biointerface Research in Applied Chemistry” Medicinal plants may be an effective alternative for treating acne.
June 2026 in “arXiv (Cornell University)” Hair beds in fluid show nonlinear response due to viscosity, inertia, and elasticity.
July 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” Thymic stromal lymphopoietin (TSLP) promotes hair growth by stimulating specific skin cells.
IL-18 signaling helps mature Tregs move into the thymus.
27 citations
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May 2011 in “Journal of Investigative Dermatology” TCHHL1 is a protein important for hair growth, found in hair follicles.
8 citations
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April 1997 in “Experimental Dermatology” hHbl gene is active in hair shaft cells and some pilomatricomas.
IL-18 signaling helps mature Tregs move into the thymus.
4 citations
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August 2006 in “The Journal of Dermatology” HLA can be linked to autoimmune hepatitis.
7 citations
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March 2012 in “Journal of Investigative Dermatology” Some thymic peptides can increase human hair growth, while others may inhibit it.
January 2024 in “Inflammation and regeneration” Th22 cells are essential for Tβ15-induced hair growth in mice.
72 citations
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October 2009 in “The FASEB journal” TRH stimulates human hair growth and extends the hair growth phase.
15 citations
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May 2022 in “Journal of Investigative Dermatology” Endothelial TLR2 is crucial for timely wound healing, but HFSC TLR2 is not needed.
135 citations
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October 1997 in “Journal of biological chemistry/The Journal of biological chemistry” Trichohyalin is modified by enzymes to form strong structures in hair cells.
38 citations
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January 2016 in “Cell Death and Disease” The TCL1 transgenic mouse model is useful for understanding human B-cell leukemia and testing new treatments.
6 citations
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May 2013 in “The Journal of Dermatology” Autoimmune reactions may cause both alopecia areata and HAM.
14 citations
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June 2011 in “Journal of Dermatological Science” TSH influences keratin expression in human hair follicles.
April 2024 in “Cellular signalling” Activating TRPMLs helps human cells important for hair growth and increases hair growth in mice.
November 2025 in “Journal of Investigative Dermatology” BTNL2 helps protect hair follicles from immune attacks.
5 citations
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February 2022 in “Stem cell reports” Thymic stromal lymphopoietin (TSLP) promotes hair growth, especially after skin injury.
2 citations
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July 2021 in “Biochemical and Biophysical Research Communications” CTHRC1 helps hair grow back, and plantar dermis mixture boosts it.
1 citations
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September 2023 in “eLife” TLR2 is important for hair growth and can be targeted to treat hair loss.
November 2025 in “The Journal of Immunology” BTNL2 helps protect hair follicles from immune attacks, which could aid in treating alopecia areata.
245 citations
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October 2015 in “Nature medicine” Hair follicle-derived IL-7 and IL-15 are crucial for maintaining skin-resident memory T cells and could be targeted for treating skin diseases and lymphoma.
TLR2 helps control hair growth and regeneration, and its reduction with age or obesity can impair hair growth.