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Glossary Testosterone Propionate

fast-acting testosterone ester used in hormone therapy and bodybuilding

Testosterone Propionate, often referred to as Test Prop, is a fast-acting ester of testosterone, a primary male sex hormone. It is commonly used in hormone replacement therapy and bodybuilding to promote muscle growth, increase strength, and improve overall physical performance. The propionate ester allows for quicker release into the bloodstream, requiring more frequent injections compared to other testosterone esters.

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Research

5 / 1000+ results

research Detection of testosterone propionate administration in horse hair samples

36 citations , March 2007 in “Journal of Chromatography B”

This study developed a sensitive and specific method for detecting testosterone in horse hair, finding trace amounts in samples for up to five months after administering a single dose.

research Mitotic activity in the epidermis of the rabbit stimulated with local applications of testosterone propionate

25 citations , April 1949 in “The journal of experimental zoology”

This research studied the effect of local testosterone propionate applications on rabbit epidermal mitotic activity but reports no new results.

research The stimulation of hair growth in the flank organs of female hamsters by subcutaneous testosterone propionate and its inhibition by topical cyproterone acetate: dose-response studies

15 citations , November 1983 in “British journal of dermatology/British journal of dermatology, Supplement”

This study found that testosterone propionate increased hair mass in female hamsters' flank organs, while cyproterone acetate applied topically reduced androgen-stimulated hair in a dose-dependent manner.

research Analysis of Methyltestosterone and Testosterone Propionate in Dried Blood Spots After Transdermal Application

2 citations , June 2025 in “Drug Testing and Analysis”

This study found that after application of a testosterone cream containing 17α-methyltestosterone and testosterone propionate, these compounds could be detected in dried blood spots up to 97 hours post-application, potentially leading to sample contamination during fingertip puncture.

research Development and Validation of A C57BL/6 Mouse Model of Androgenetic Alopecia Through Testosterone Propionate Induction

March 2026 in “Trends in Sciences”

This study developed a testosterone propionate-induced C57BL/6 mouse model of androgenetic alopecia, demonstrating that high-dose, prolonged testosterone administration inhibited hair regrowth and mirrored human AGA pathology, providing a useful platform for studying hair loss mechanisms and testing therapies targeting the Wnt/β-catenin pathway.

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Community Join

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community Very agressive protection / regrowth stack on steroids

in Journals / Progress Pictures 223 upvotes 8 months ago

A 24-year-old with hair thinning is using a regimen including dutasteride, RU58841, HGH, GHK-cu, and other compounds to protect and regrow hair. They are also incorporating a mild cutting cycle with testosterone propionate, anavar, and tirzepatide.

community Is this broscience? From More Plates, More Dates

in Research/Science 21 upvotes 2 years ago

The conversation discusses whether finasteride's reduction of DHT and increase in scalp testosterone contribute to hair follicle miniaturization. Some participants argue testosterone does not cause miniaturization, while others suggest that even with reduced DHT, other androgens like testosterone may still contribute to hair loss.

community DHT Harms Scalp Microbiome: DHT Itch is REAL

413 upvotes 1 year ago

Increased Malassezia and Cutibacterium in the scalp microbiome are linked to higher sebum production and inflammation in androgenetic alopecia (AGA). Treatments include ciclopirox shampoo, benzoyl peroxide shampoo, clobetasol propionate, calcipotriol, minoxidil, finasteride, and dutasteride.

community 2 % fucoidan significantly alleviated AGA symptoms, promoted hair growth, and increased hair density

21 upvotes 11 months ago

2% fucoidan alleviated AGA symptoms, promoted hair growth, and increased hair density in mice. Fucoidan is considered safe for humans as a supplement and topical skincare product, with potential therapeutic effects against AGA.

community upped dutasteride from 0,5mg to 3mg and question about my shedding right now

11 upvotes 1 year ago

The user increased their dutasteride dose from 0.5mg to 3mg daily to address hair thinning, noticing a change in shedding patterns and possibly thicker hair. Other users discuss the effectiveness of different dutasteride doses on DHT levels and suggest staying consistent with the treatment.

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Learn

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learn Betamethasone Dipropionate

learn Bicalutamide

Could bicalutamide help trans women regrow hair lost to testosterone? No study has tested bicalutamide for hair regrowth in trans women. In cisgender women the only randomized trial found it added nothing to minoxidil, and it is an off-label prescription drug that requires liver monitoring.

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