Sometimes in old novels I have come across people using “Californian Poppy” and I had no idea what it was. It turns out it’s not drugs, as I imagined, but brillantine, or hair oil. I remember my Grandfather using brilliantine in the 70s and 80s, even when he had very little hair, and I assume he used it his whole life. Women also used it, as shown in the ad below, as well as setting lotion, and in the 1930s shampoo began being advertised to replace soap for washing hair. Enjoy these ads from 1939, and if you’re brave there are instructions for damp setting your hair!