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.
Treat your acne. Tea tree oil can help get rid of acne causing bacteria. Add 1-3 drops of tea tree oil to your cleanser or moisturizer. Tea tree oil can also be mixed with a teaspoon of coconut oil and applied to your face. Use a cotton swab to apply the mixture to your face and let your skin absorb it. There is good scientific evidence that tea tree oil is effective for treating acne.