Goulard's Extract

Goulard's Extract (also known as subacetate of lead) is a solution of lead acetate and lead oxide used as an astringent during the 19th and early 20th centuries. It was named after its introducer, Thomas Goulard. Lead's carcinogenic properties, as well as the development of more effective astringents, led to doctors abandoning its use.

Goulard's Extract was a primary ingredient in both Goulard's Cerate and Goulard's Water.