An aura is a unique energetic signature of your being. Just because we don’t see it doesn’t mean it doesn’t exist. An aura is something human beings feel and intuit. Hence, it is important to take care of ourselves on this spiritual level as well.
You can cleanse your aura and strengthen it by practicing protection meditations. It is also a good idea to go for a walk in the woods and spend time all by yourself. Remember to always breathe fully and get into your body. Learn to listen to your emotions and stay true to yourself. Nothing strengthens your aura more than authenticity.