However, if you're looking for a natural remedy to fight acne and itchiness, cinnamon bark oil is not an inexpensive solution. It is quite expensive and is not easily available in stores. This is because it is extremely rare and contains many beneficial compounds. One of them is cinnamaldehyde. The percentage of cinnamaldehyde is the most significant. You can find this compound in over 90 percent of cinnamon bark essential oil, but you should look for the one with a high percentage.