#lawsone

[boatporn]

Throwback to that time when naval architects made cover page news?

(via "Misery loves company" / J.S. Pughe. | Library of Congress)

[absolutegravityman]

Reposted from @molecule_of_the_day (@get_regrann) - Lawsone, also known as hennotannic acid, is a red-orange dye present in the leaves of the henna plant 🌱 as well as in the flower of water hyacinth. Humans have used henna extracts containing lawsone as hair and skin dyes for more than 5000 years for aesthetic and cultural purposes. Up till today, in India 🇮🇳, Bangladesh 🇧🇩, and many other Asian countries, as a part of traditional weddings, henna is used for decorative purposes, typically applied on the hands 🖐 and feet 🦶 of the bride. Men and women also use henna to dye their hair. Lawsone works by reacting chemically with the protein keratin in skin and hair, in a process known as Michael addition, resulting in a strong permanent stain that lasts until the skin or hair is shed. Thanks 🙏 anonymous for the suggestion! The molecular structure was created using ChemDoodle. Be sure to follow them at @ichemlabs! #lawsone #henna #dye #decoration #tattoo #india #bangladesh #asia #wedding #waterhyacinth #hair #skin #tradition #heritage #culture #photooftheday #chemistry #art #molecule - #regrann (en Urb Los Ficus - Santa Anita) https://www.instagram.com/p/B3V9mbrhN0d/?igshid=r07o1pyco09a