3d image of lawsone skeletal formula

lawsone hennotannic acid 2-hydroxy-1 4-naphthoquinone natural orange red-orange dye henna plant lawsonia inermis water hyacinth eichhornia crassipes skin keratin michael addition light sunless tanning sunscreen derivative rendering supplement biological activity bioactive nutrient prescription drug food additive nutraceutica dietary alternative medicine herbal herbal phytochemical phytotherapy herb natural herbalism pharmacognosy pharmacopoeia henna tree egyptian privet exfoliation body art monoterpene mehndi alta neutral black