Many don’t know this, but the world’s oldest soap is the soap of Aleppo, hailing all the way from Northern Syria. It’s completely natural without any synthetic chemicals or additives, and it’s made almost entirely from olive oil: 82% oil, 12% laurel oil, and a bit of soda. Now that the country is at war, many of the Aleppo factories have shut down. Luckily, there are still a few of the soap factories open in the country, and a photographer was able to capture these images of the ancient practice of Aleppo soap making. See the process below.