December 2016 in “Paleontological Journal” Hair growth can be induced by transplanting certain cells, but these cells lose their properties during culturing. The best cell interaction happens in a liquid medium under gravity, and using collagen doesn't help. Future research could focus on using growth factors to stimulate these cells.
January 2011 in “Shiyong kouqiang yixue zazhi” Dermal papilla cells and bulge stem cells can help reconstruct hair follicles.
2 citations
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January 2009 in “Human cell culture” 
January 2022 in “Stem cell biology and regenerative medicine” Dermal sheath cells can help grow new hair follicles and show promise in treating hair loss.
13 citations
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November 1959 in “Annals of the New York Academy of Sciences” Human hair follicles can grow back.
57 citations
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November 1998 in “Wound Repair and Regeneration” Hair papilla cells can create and regenerate hair bulbs under the right conditions.
April 2018 in “Journal of Investigative Dermatology” Key signals for hair follicle formation were identified.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Damaged hair follicle stem cells may leave the skin to help maintain youthfulness.
October 2012 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Scientists used a special imaging technique to observe that hair follicle regeneration involves cell division and structural changes, mostly in the lower part of the follicle, and that the dermal papilla at the base is crucial for regrowth.
38 citations
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January 1988 
184 citations
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November 2014 in “Developmental Cell” Hair follicle dermal stem cells are key for regenerating parts of the hair follicle and determining hair type.
18 citations
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January 2013 in “Dermatology Online Journal” Trichofolliculoma is a rare skin bump on the face or scalp.
3 citations
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May 2019 in “Medical Hypotheses” A new hair transplant method suggests freezing and storing dense hairs for future use to address severe hair loss.
1 citations
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March 2014 in “TURKDERM” Understanding hair follicles can lead to new treatments for hair loss and skin tumors.
July 2022 in “Research Square (Research Square)” A new gel helps grow mature eggs in a lab that can be fertilized and develop further.
47 citations
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September 1997 in “Journal of Pharmaceutical Sciences” Properly formulated large molecules can reach active levels at the hair bulb.
3 citations
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December 2024 in “Journal of Animal Physiology and Animal Nutrition” FGF20 is essential for hair follicle stem cell growth and development in fine-wool sheep.
67 citations
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July 2000 in “Proceedings of the National Academy of Sciences” The model accurately simulates human hair growth and hair loss patterns.
15 citations
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February 2021 in “Scientific Reports” A specific group of stem cells can help regenerate hair continuously.
January 2003 in “Chinese Journal of Reparative and Reconstructive Surgery” Dermal papilla cells can help form hair follicles and produce hair.
January 2003 in “Journal of the Fourth Military Medical University” Hair follicles can regenerate if cut at certain points, with stem cells in the upper part.
22 citations
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September 1982 in “Journal of ultrastructure research” Wool follicle cells are more complex than previously thought.
16 citations
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January 1998 in “Dermatology” Androgens may worsen a natural hair resting phase, possibly leading to hair loss.
1 citations
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June 2017 in “PLOS ONE” Host cells are crucial for the maturation of reconstructed hair follicles.
5 citations
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October 2020 in “Experimental dermatology” A specific type of skin cell creates an opening for hair to grow out, and problems with this process can lead to skin conditions.
December 2016 in “Clinics in surgery” Understanding hair follicle biology and stem cell control can help develop treatments to stimulate hair growth for cosmetic procedures.
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.
August 2012 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” FGF18 controls hair cycle rest and growth phases.
2 citations
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January 2022 in “Skin research and technology” OCT can detect hidden hair follicles in alopecia areata, indicating potential hair regrowth.
2 citations
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April 2019 in “Experimental Dermatology” Hair follicles respond differently to pulling forces in various regions.