When diluted and applied topically, lemon essential oil can kill bacteria that may get trapped in pores and cause breakouts. It can also clarify your skin with antioxidants and vitamin C, gently exfoliating dead skin cells that so often become trapped in hair follicle and pores. Since lemon oil has healing properties, you get the added bonus of speedier healing from breakouts and treatment of your acne scars when you use it.