March 2024 in “Journal of medicinal plants studies” Hibiscus has medicinal benefits but can be toxic in high doses and is unsafe for pregnant women and infants.
January 2024 in “International Journal of Research Publication and Reviews” The herbal hair serum with rosemary, hibiscus, and neem is safe and effective for hair care.
May 2023 in “Endocrine, metabolic & immune disorders” Hibiscus rosa-sinensis is used in traditional medicine and is safe in high doses, with various health benefits.
April 2019 in “Agriculture and natural resources”
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December 2021 in “Annals of phytomedicine” The herbal hair dye with a 1:2 henna to indigo ratio works well, is safe, and eco-friendly.