After testing a few of the essential oils from the haul, I saw a rapid change in my appearance. My face was no longer as swollen as it used to be, and that because essential oils are rich in anti-inflammatory properties. Some oils like geranium, eucalyptus, peppermint, etc., also act as an astringent and/or a diuretic, tightening the skin by reducing fluid retention. The basic essential oil formula for reducing under-eye puffiness is to mix one to two drops of essential oil with one tablespoon of carrier oil. There are many kinds of carrier oils available in the market, but I typically use sweet almond oil. I cannot help but mention that the Lavender Essential Oil from WOW Skin Science is my favorite. Thus, from the vast list of essential oils for bags under eyes, I have listed out the best essential oils for puffy eyes, with reasons: