November 2025 in “The Journal of Immunology” BTNL2 helps protect hair follicles from immune attacks, which could aid in treating alopecia areata.
13 citations
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August 2020 in “Frontiers in Immunology” Gamma delta T cells in the skin help with healing and defense but can also cause autoimmune issues, and more research is needed to understand how they are activated.
Different types of sun exposure damage skin cells and immune cells, with chronic exposure leading to more severe and lasting damage.
330 citations
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December 2009 in “Cell stem cell” SKPs are similar to adult skin stem cells and could help in skin repair and hair growth.
102 citations
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July 2020 in “International journal of molecular sciences” Hormones like testosterone and estrogen significantly affect hair growth and structure.