Here is a sample of ads for different varieties of arsenic wafers. In the late 19th/early 20th century, these were sold to clear up skin complexion. Just nibble on one and get better skin!
Dr. Mackenzie’s Harmless Arsenic WafersDr. Campbell’s Safe Arsenic Complex WafersDr. Rose’s French Arsenic Complexion WafersDr. Botot’s Complexion Wafers
