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18-β-Glycyrrhetinic Acid Promotes Hair Growth by Stimulating the Proliferation of Dermal Papilla Cells and Outer Root Sheath Cells, and Extends the Anagen Phase by Inhibiting 5α-Reductase

research 18-β-Glycyrrhetinic Acid Promotes Hair Growth by Stimulating the Proliferation of Dermal Papilla Cells and Outer Root Sheath Cells, and Extends the Anagen Phase by Inhibiting 5α-Reductase

July 2024 in “Biological and Pharmaceutical Bulletin”

This study found that 18-β-Glycyrrhetinic acid, a licorice component, stimulated human hair follicle cell proliferation, inhibited testosterone 5α-reductase, and suppressed TGF-β1, suggesting potential for treating androgenetic alopecia by promoting hair growth and prolonging the anagen phase.

research Outer root sheath keratinization in anagen and catagen of the mammalian hair follicle. A seventh distinct type of keratinization in the hair follicle: trichilemmal keratinization.

59 citations , August 1981 in “PubMed”

This study describes trichilemmal keratinization as a distinct process of hair follicle keratinization that occurs in specific areas of the outer root sheath, illustrated using electron microscopy on dog hair.

research Localization of Minoxidil Sulfotransferase in Rat Liver and the Outer Root Sheath of Anagen Pelage and Vibrissa Follicles

46 citations , January 1991 in “Journal of Investigative Dermatology”

Minoxidil works in liver and outer hair root sheath for hair growth.

research Abnormal inner root sheath of the hair follicle in the loose anagen hair syndrome: An ultrastructural study

31 citations , December 2010 in “Journal of the American Academy of Dermatology”

This study reports that structural abnormalities in the inner root sheath of hair follicles may cause the hair shaft to be loosely attached in patients with loose anagen hair syndrome.

Novel ALK5 Inhibitor TP0427736 Reduces TGF-β Induced Growth Inhibition in Human Outer Root Sheath Cells and Elongates Anagen Phase in Mouse Hair Follicles

research Novel ALK5 inhibitor TP0427736 reduces TGF-β induced growth inhibition in human outer root sheath cells and elongates anagen phase in mouse hair follicles

14 citations , January 2017 in “Pharmacological Reports”

TP0427736 may help treat hair loss by blocking a specific protein and promoting hair growth.

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Community Join

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community Sanguisorba Officinalis Root Extract, and other FGF-5 inhibitors?

4 upvotes 9 years ago

The conversation discusses the potential of Sanguisorba Officinalis Root Extract as a treatment for hair loss by inhibiting FGF-5. The user also mentions the product évolis, which is based on this extract but is only available in the US and Australia.

community Losing hair without the white bulb, Tressless GPT's Response. Do you guys agree?

4 upvotes 1 year ago

Hair loss without a white bulb may indicate mechanical damage, anagen effluvium, alopecia areata, or traction alopecia. Seeking a specialist is recommended, but access can be difficult in smaller areas.

community Aminexil - is it possible that if you stop using it you lose more hair than you had originally?

1 upvotes 1 year ago

Aminexil is used to strengthen hair roots but stopping it may lead to hair thinning, unlike minoxidil which has more complex effects. The user did not use finasteride or minoxidil due to concerns about side effects.

community Why is minoxidil the “regrowth stimulant” and finasteride “the maintenance”, when official studies show more growth on finasteride ?

in Research/Science 46 upvotes 6 months ago

Finasteride is more effective for long-term hair maintenance by addressing the root cause of hair loss, while minoxidil acts as a growth stimulant with faster visible results. Combining both treatments is optimal, with oral minoxidil often showing better results for some individuals.

community Saw an opinion on PP405 and sharing

5 months ago

PP405 is discussed as a potential adjunct therapy for hair loss, with skepticism about its effectiveness and trial results. Users mention combining it with finasteride and minoxidil for better results, while others debate the root causes of hair loss and the limitations of current treatments.

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