January 2025 in “Yonsei Medical Journal” Mastic gum and peppermint extracts may promote hair growth and health.
2 citations
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March 2015 in “Toxicology and Environmental Health Sciences” Rice bran extract caused moderate skin irritation but no eye irritation, while a diluted essence was not irritating to skin and only slightly to guinea pigs.
15 citations
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July 1997 in “Clinics in Dermatology” Traditional Chinese medications can cause skin reactions, and better testing and reporting are needed to identify allergens.
9 citations
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January 1966 in “Economic botany” Plant-based ingredients in hair care are being replaced by synthetic alternatives.
14 citations
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July 2017 in “Monatshefte für Chemie - Chemical Monthly” Analytical chemistry helps understand the makeup and use of ancient medicines, but it's complex and challenging.