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.
What it is: Tea tree oil is the essential oil taken from the leaves of the Australian tree Melaleuca alternifolia. Found in many natural acne remedies, it helps kill bacteria in the pores and hair follicles that lead to blemishes, and, luckily for those who can't find relief fast enough, it penetrates the skin quickly.