Egg whites tighten the pores and contain proteins that both repair skin and absorb excess oil, making them a powerful tool for dealing with acne. Separate the egg white from the yolk. Whisk together the egg white with 1 teaspoon of lemon juice for one minute. The mixture will be messy, so apply it to your clean, dry face over a sink. Keep the mask on for 10 to 15 minutes. Once the mask starts cracking, wash away with warm water.