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.
APPLIED TO THE SKIN 1  : For nail fungus (onychomycosis): 100% tea tree oil solution applied twice daily for six months. 2  For athleteâs foot (tinea pedis): 25% or 50% tea tree oil solution applied twice daily for one month has been used.3  For acne: 5% tea tree oil gel applied daily. It is unclear if the effects are caused by the tea tree oil alone or the combination of lavender and tea tree oil. 2  Methicillin-resistant Staphylococcus aureus (MRSA) infection. 3  Evidence about the effects of tea tree oil on MRSA infection is unclear.