23 citations,
January 2001 in “International journal of toxicology” St. John's Wort extract and oil safety in cosmetics is unclear; more data needed on photosensitization, toxicity, and human irritation.
January 2011 in “Reactions Weekly” St. John's Wort may reduce the effectiveness of finasteride by increasing its breakdown in the body.
November 2023 in “Turkish journal of botany” Türkiye uses many local plants to treat skin problems.
33 citations,
November 2008 in “European Journal of Pharmaceutical Sciences” St. John's wort increases finasteride metabolism, reducing its effectiveness; use caution when combining them.
7 citations,
February 2016 in “Dermatology and therapy” t-Flavanone helps improve male pattern hair loss by making hair roots stronger.