9. Lead Paint That Wouldn't Wash Off
The 1700s were especially popular for ghost-white powdered faces, and some of that spilled over into the beginning of the 1800s (before the popularity of the scrubbed face took over.) 

Women would paint their faces white with Venetian ceruse, a paint made by mixing lead with vinegar. Because cosmetics were considered expensive, they skipped washing their face and wore the white lead until it faded away on its own - really letting it sink into their skin.

Image from Nicolas de Largillière.