Variously called Death Day, Decision day, and a number of other less kind words, D-Day was the day that the Allies began the big push from the coast of France all the way to the heart of Germany, ending WWII.
More importantly when it comes to cystic acne, tea tree oil can be harmful to your skin when applied in high concentrations. Some individuals have reported severe skin irritation and allergic dermatitis after applying too much tea tree oil, or applying the proper dose too frequently.
Tree tree oil can be used in the following ways: 1  Aromatically: Diffuse tea tree oil throughout your home using an oil diffuser. 2  Topically: You should always dilute tea tree oil with a carrier oil like coconut oil in a 1:1 ratio before applying it directly to skin.