April 2016 in “Journal of Investigative Dermatology” Wnt ligands, produced by dermal papilla cells, are essential for adult hair growth and regeneration.
January 2010 in “Springer eBooks” Pubic hair transplantation can help women with little to no pubic hair, using scalp hair for a natural look and requires careful aftercare.
25 citations
,
June 2022 in “Developmental cell” Overactivating Hedgehog signaling makes hair follicle cells in mice grow hair faster and create more follicles.
3 citations
,
June 2000 in “Journal of The American Academy of Dermatology” Men with balding at age 45 had higher IGF-1 and lower IGFBP-3 levels, suggesting these factors might influence male pattern baldness.
23 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Certain chemicals and peptides can promote hair growth or prevent baldness.
February 2011 in “Journal of the American Academy of Dermatology” A 60-year-old man with a long-term balding condition also developed a rare hair loss condition usually seen in postmenopausal women.
December 2019 in “Ukrainian Journal of Veterinary and Agricultural Sciences” Donkey and horse hair have different microscopic structures, which can help tell them apart.
20 citations
,
February 2012 in “Archives of dermatology” Leg hair transplants can create a natural-looking hairline and show successful growth over several years.
1 citations
,
November 2019 in “Applied sciences” Human hair provides more UV protection when aligned and at higher angles, but the scalp still gets UV exposure.
June 1967 in “Journal of Cellular Physiology” The 3D hair follicle model improves understanding of hair growth and drug testing.
September 2019 in “Journal of Investigative Dermatology” People with pattern hair loss have higher polyamine levels in the top of their head compared to the back.
34 citations
,
February 2013 in “Journal of The American Academy of Dermatology” Vertex pattern hair loss linked to higher prostate cancer risk.
55 citations
,
February 2014 in “Journal of Structural Biology” Human hair has a complex, variable structure with a consistent matrix and double-twist pattern.
January 2007 in “한국미용학회지” People with hair loss have smaller hair roots and less fat tissue.
February 2026 in “Nano Research” A new microneedle treatment can help regrow hair by improving lymphatic function and metabolism.
2 citations
,
August 2019 in “Electronics and Communications in Japan” The device mimics human hair follicles and detects tiny forces and moments with high sensitivity.
June 2023 in “JAAD case reports” A rare scalp condition, cutis verticis gyrata, was found in a woman with primary scarring alopecia.
July 2023 in “Biomolecules” The new "whisker follicle microinjection assay" can test how different biomolecules affect hair growth and color.
19 citations
,
August 2013 in “Facial Plastic Surgery Clinics of North America” Children's hairlines change shape as they grow, with women often developing a widow's peak and men's hairlines becoming more convex and possibly balding at the temples, influenced by genetics and hormones.
2 citations
,
March 1989 in “International Journal of Dermatology” 1 citations
,
January 2007 in “AIP conference proceedings” High-resolution x-ray images showed three main structures in human hair: medulla, cortex, and cuticle.
Since 1995, we only use Follicular Unit Transplantation for hair restoration and stopped using minigrafting/micrografting techniques.
2 citations
,
January 2016 in “Archives of Aesthetic Plastic Surgery” The technique effectively restores temporal peaks in hair transplants using different hair densities and angles in three zones.
November 2023 in “Frontiers in veterinary science” The study provides insights into hair growth mechanisms in yaks.
3 citations
,
February 2009 in “Journal of The European Academy of Dermatology and Venereology” Sparse hairs below frontal hairline can indicate early male balding.
October 2019 in “Skin appendage disorders” The vitreous membrane in hair follicles changes shape during the hair cycle and may affect hair growth and nutrient exchange.
12 citations
,
November 2014 in “PLOS Computational Biology” The study concluded that hair growth in mice is regulated by a stable interaction between skin cell types, and disrupting this can cause hair loss.
2 citations
,
August 2011 in “Dermatologic Surgery” Small micropunches for hair transplants can increase density but may cause more bleeding and longer healing.
48 citations
,
July 1993 in “Archives of Dermatological Research” Merkel cells are abundant in facial vellus hair follicles, especially during the anagen phase.
September 2025 in “The American Journal of Medical Sciences and Pharmaceutical Research” Thinning and micro-graduation techniques can effectively and reversibly correct women's hairlines.