https://today.oregonstate.edu/news/osu-study-after-two-hours-sunscreen-includes-zinc-oxide-loses-effectiveness-becomes-toxic
https://phamix.com/2010/01/20/nordihydroguaiaretic-acid-ndga-what-it-can-do-for-skin/#:~:text=Because%20it%20prevents%20the%20oxidation,many%20effective%20and%20beneficial%20ingredients
https://www.jonbarron.org/cleansing-your-blood
https://www.texasbeyondhistory.net/ethnobot/images/creosote.html
https://jonbarron.org/?s=chaparral
http://www.ethnoherbalist.com/southern-california-native-plants-medicinal/creosote-bush-uses
