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research Keratinocyte Stem Cells but Not Melanocyte Stem Cells Are the Primary Target for Radiation-Induced Hair Graying

30 citations , April 2013 in “Journal of Investigative Dermatology”

This study found that ionizing radiation primarily affects keratinocyte stem cells in the hair follicle, suggesting they play a central role in radiation-induced hair graying, rather than melanocyte stem cells.

research Spermidine Promotes Human Hair Growth and Is a Novel Modulator of Human Epithelial Stem Cell Functions

61 citations , July 2011 in “PLOS ONE”

This study provides the first direct evidence that spermidine can stimulate hair growth and modulate human epithelial stem cell biology in cultured human hair follicles.

research Formulation and Evaluation of a Multicomponent Herbal Shampoo for Enhanced Hair and Scalp Health

October 2025 in “Current Pharmaceutical Research”

This study evaluated a new herbal shampoo made from traditional plants and found it to have effective cleansing properties, moderate foam stability, and environmental safety, suggesting it as a favorable natural alternative to synthetic shampoos.

research Optimal stimulation toward the dermal papilla lineage can be promoted by combined use of osteogenic and adipogenic inducers

2 citations , November 2019 in “FEBS open bio”

This study found that stimulating dermal papilla cells with specific adipo-osteogenic factors and growth factors helped maintain their viability and restored their hair-forming activity in vitro.

research Cosmetics and Cosmeceutical Applications of Chitin, Chitosan and Their Derivatives

233 citations , February 2018 in “Polymers”

This review examines the roles and benefits of chitosan in cosmetics and oral hygiene, highlighting its potential in the cosmeceutical market, but it reports no new results.

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community Sugar and Hair loss connections

in Research/Science 41 upvotes 1 year ago

High sugar diets may worsen hair loss by increasing 5α-reductase activity and androgen levels, especially in women with PCOS. A low sugar diet might reduce scalp DHT levels, similar to finasteride, but genetics also significantly influence hair loss.

community Debunking Androgenetic Theory (Hair Transplants)

in Research/Science 25 upvotes 2 years ago

The post discusses a theory that hair regrowth after transplant is due to the angiogenesis process (new blood vessels forming), not because the transplanted hair is unaffected by DHT. The responses highlight the established belief in 'donor dominance' (the importance of the hair's origin in transplantation) and skepticism about the new theory.

community Scalp tension/pain = Hair loss?

in Chat 1 upvotes 7 months ago

Hair loss was triggered by a testosterone and Masteron cycle, causing scalp tension and shedding. Topical finasteride, RU58841, and oral minoxidil were used to stop shedding and improve scalp condition.

community Why Fin/Dut Isn't Working for You GPR133: a new hairloss mechanism + Steroid Hair Loss Deep Dive

6 upvotes 1 month ago

Hair loss may be linked to the GPR133 receptor, independent of the androgen receptor pathway. Treatments like finasteride, dutasteride, minoxidil, RU58841, and KX-826 show varying results, with hair loss persisting due to high testosterone and GPR133's role.

community Hair loss research focused on chemistry for decades because we misunderstood the mechanics of growth.

51 upvotes 7 months ago

Hair growth relies on mechanical forces, not just chemicals, with tissue acting like a motor. Minoxidil and finasteride help, but maintaining tissue elasticity and addressing mechanical issues are essential.

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