February 2026 in “International Journal of Molecular Sciences” PDLLA filler can improve hair thickness and shine by reducing age-related hair decline.
Poly-D,L-lactic acid boosts hair growth in aged skin by activating hair follicle stem cells.
June 2022 in “International journal of drug delivery technology” Nebivolol cream may be a promising hair loss treatment by improving blood flow and nourishing hair follicles.
57 citations
,
November 1987 in “Pediatric Dermatology” Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.
23 citations
,
December 2013 in “Regenerative Medicine” Hair follicle culture helps develop new treatments for hair loss.
2 citations
,
January 2014 in “Hair therapy & transplantation” New treatments for hair growth disorders are needed due to limited current options and complex hair follicle biology.
September 2004 in “Experimental dermatology” Melatonin directly affects mouse hair follicles and may influence hair growth.
146 citations
,
May 2002 in “The American journal of pathology” Cathepsin L is essential for normal hair growth and development.
35 citations
,
March 2007 in “Skin Research and Technology” The conclusion is that exogen is a unique hair cycle phase and the new sampling method specifically targets this stage, which may help in future hair loss research.
31 citations
,
May 2008 in “Drug Discovery Today: Disease Mechanisms” Different hair growth problems are caused by genetic issues or changes in hair growth cycles, and new treatments are being developed.
26 citations
,
January 2013 in “BioMed Research International” Hormonal changes after childbirth and menopause can lead to women's hair loss and facial hair growth, with a need for better treatments.
11 citations
,
January 2004 in “Exogenous dermatology” Outside factors like grooming, chemicals, and the environment can damage hair and cause disorders.
3 citations
,
January 2012 in “Wageningen Academic Publishers eBooks” Hair health depends on various factors and hair loss can significantly affect a person's well-being; understanding hair biology is key for creating effective hair care treatments.
2 citations
,
February 2014 in “Animal Biotechnology” The PTGER2 gene is highly active in Cashmere goat skin and its activity changes with the hair growth cycle.
June 2025 in “Clinical Cosmetic and Investigational Dermatology” FUE hair transplantation is safe and effective for improving hair loss in children.
Dermal stem cells help regenerate hair follicles and heal skin wounds.
759 citations
,
February 2009 in “Current Biology” Hair follicles are complex, dynamic mini-organs that help us understand cell growth, death, migration, and differentiation, as well as tissue regeneration and tumor biology.
224 citations
,
March 2006 in “Seminars in Cutaneous Medicine and Surgery” The document concludes that understanding hair follicle biology can lead to better hair loss treatments.
211 citations
,
October 2001 in “The FASEB Journal” Noggin is necessary to start the hair growth phase in skin after birth.
179 citations
,
April 2012 in “Nature Communications” Regenerated fully functional hair follicles using stem cells, with potential for hair regrowth therapy.
159 citations
,
December 2007 in “American Journal of Pathology” Stress-related substance P may lead to hair loss and negatively affect hair growth.
159 citations
,
July 2006 in “Endocrine Reviews” Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.
73 citations
,
November 2000 in “Proceedings of the National Academy of Sciences of the United States of America” There are two ways to start hair growth: one needs Stat3 and the other does not, but both need PI3K activation.
65 citations
,
September 2004 in “The American journal of pathology” Blocking BMP signaling causes hair loss and disrupts hair growth cycles.
45 citations
,
April 2001 in “The journal of investigative dermatology/Journal of investigative dermatology” Different Myc family proteins are located in various parts of the hair follicle and may affect stem cell behavior.
42 citations
,
July 2014 in “Journal of biological chemistry/The Journal of biological chemistry” Heparan sulfate is important for hair growth, preventing new hair formation in mature skin, and controlling oil gland development.
37 citations
,
January 2009 in “Dermatology” Healthy women tend to lose more hair in July and April, and the least in February.
37 citations
,
July 1999 in “The EMBO Journal” Overexpression of certain genes can shorten hair by disrupting the hair-growth cycle.
36 citations
,
August 2023 in “Journal of Investigative Dermatology” Understanding the hair growth cycle in mice is crucial for accurate research, as it affects study results and requires careful timing and methods.
33 citations
,
January 2017 in “Conservation physiology” Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.