TLDR The herbal supplement increased hair thickness and reduced scalp oiliness in women.
In a 24-week study conducted 6 years ago, 26 Korean women aged 26-55 with androgenic alopecia were given a supplement of Black Bean, Licorice, and Biotae Folium. The results showed a significant increase in hair diameter and a decrease in sebum secretion, but no significant effect on hair density. The supplement was deemed likely effective in improving hair and scalp conditions, but the researchers suggested further studies with larger participant numbers and varied herb combinations and dosages to better understand the effects. No safety issues were reported.
25 citations,
August 2016 in “Journal of Cosmetic Dermatology” The marine complex supplement significantly improved hair growth in men with thinning hair without adverse effects.
1 citations,
August 2021 in “Cosmoderma” Low-dose oral minoxidil is effective and well-tolerated for treating hair loss.
59 citations,
July 2020 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,
March 2015 in “PubMed” 5% minoxidil foam effectively treats female hair loss.
January 2007 in “Strait Pharmaceutical Journal” 
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127 citations,
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