Finasteride treatment slows down hair loss, boosts hair growth, and may increase hair thickness or length, but it can cause side effects like decreased libido and depression in less than 1% of people.
February 2020 in “Definitions” 
April 2017 in “Reactions Weekly” Finasteride may cause weak ejaculation and reduced semen volume.
September 1999 in “PubMed” Finasteride effectively thickens hair in men with minimal side effects.
July 1997 in “Journal of Cutaneous Medicine and Surgery” Finasteride significantly increases scalp hair and prevents hair loss in young and middle-aged men.
4 citations
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November 2001 in “PubMed” 1 mg/day oral finasteride significantly improves hair growth in men with male pattern baldness.
35 citations
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February 2012 in “Journal of The American Academy of Dermatology” Finasteride significantly improves hair growth but may cause sexual side effects.
1 citations
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May 1998 in “Inpharma Weekly” Finasteride works for male hair loss only.
June 2019 in “Reactions Weekly” 
January 2012 in “Yearbook of Dermatology and Dermatologic Surgery” Taking finasteride daily can effectively and safely increase hair density and thickness for women with hair loss.
March 2023 in “Oxford University Press eBooks” 2 citations
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January 2017 Minoxidil and Propecia are the only FDA-approved hair growth drugs, but people are exploring herbal alternatives due to concerns about side effects.
January 2017 in “Más dermatología” Topical finasteride may help treat hair loss in men and women.
22 citations
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July 2003 in “PubMed” Finasteride 1 mg significantly improves hair growth in men aged 41 to 60 with male pattern hair loss.
6 citations
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January 2016 in “International Journal of Trichology” Taking 1 mg of finasteride daily could potentially treat rare hair conditions like Acquired Progressive Kinking of the Hair and whisker hair.
December 2017 in “Huisarts En Wetenschap” Finasteride helps hair growth in early male baldness, but more long-term research needed.
April 2016 in “Journal of The American Academy of Dermatology” Dutasteride works better than finasteride for hair growth with similar side effects.
January 2017 in “Revista da Universidade Vale do Rio Verde” Finasteride is commonly used for male pattern hair loss but has potential risks, including irreversible sexual dysfunction.
15 citations
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April 2002 in “PubMed” Finasteride effectively treats male pattern hair loss without serious side effects.
March 2015 in “Hair transplant forum international” Finasteride can help treat men's hair loss but may have side effects.
March 2024 in “Journal of the American Academy of Dermatology” Taking medication for hair loss might cause sexual problems.
April 2026 in “The Journal of Urology” Finasteride 1 mg/day reduces semen quality without affecting hormones or sexual function.
November 2005 in “The Journal of Urology” 
August 2018 in “Journal of The American Academy of Dermatology” 
Finasteride is popular for treating male hair loss but may increase the risk of serious prostate cancer and has other potential side effects.
February 1998 in “Inpharma Weekly” Finasteride helps 83% of men maintain or increase hair count.