TLDR The 3% bidara leaf extract hair tonic was most effective for hair growth.
The study evaluated hair tonic formulations using ethanolic extract of bidara leaves (Ziziphus nummularia) at 3%, 6%, and 12% concentrations on rabbit hair growth. Conducted at Garut University from March 2020 to March 2021, the formulations were compared to distilled water (negative control) and 2% minoxidil (positive control). All formulations had consistent characteristics and were non-irritating. The 3% extract formula was the most effective, stimulating hair growth up to 10.67 mm in 28 days, outperforming both the control and 2% minoxidil.
1 citations
,
August 2021 in “Cosmoderma” 
59 citations
,
March 2021 in “Journal of The American Academy of Dermatology” Oral minoxidil promotes hair growth but may cause side effects; needs monitoring.
February 2020 in “The Pharmaceutical Society of Japan” 
May 2015 in “Journal of The American Academy of Dermatology” 5% minoxidil foam helps women with thinning hair.
8 citations
,
November 2014 in “PubMed”
January 2007 in “Strait Pharmaceutical Journal” 
1 citations
,
September 2002 in “PubMed” Minoxidil helps stimulate hair growth and reduce hair loss in women with androgenic alopecia.
370 citations
,
September 1999 in “The New England Journal of Medicine” Finasteride and minoxidil are effective for hair loss, but continued research is needed for better treatments.
127 citations
,
July 1996 in “Journal of The American Academy of Dermatology” Minoxidil shortens baldness from chemotherapy by 50.2 days without significant side effects.
