Calamine lotion used in the 1950s for sun burn, poison ivy blisters. It is a chalky pink color. Calamine is either a mixture of Zinc Oxide with about 0.5% ferric oxide or a zinc carbonate compound. In a 1992 press release, the U.S. Food and Drug Administration announced that no proof had been submitted showing calamine to be safe for use or effective in treating bug bites, stings & rashes from poison ivy, poison oak, poison sumac.
In the United Kingdom, Farley's Rusks are a dry biscuit dating from the 1880s, but manufactured by Heinz since 1994. They are usually given to infants, either soaked in milk and mashed up, or in their original hard form as a teething aid. They have a cult following among university students. Study found 100g of Farley's Original Rusks contained more sugar than 100g of chocolate biscuits. (all my sister and brothers had these when they were little)