I was introduced to YL EOs by an in-law a few years back when I then 3YO fell and was hurt. She recommended putting a drop of Lavender EO to soothe a skin abrasion on his arm and told me to check it out 20 mins later. 20 minutes later and I could not see the abrasion! A few years later I contracted an upper respirator infection and had been researching the uses for tea tree oil. I applied a couple of drops of tea tree to my upper chest at bedtime and the next morning the green/yellowish phflem (spelling) had cleared up. I then realized that there was some validity to using EOs and have been a believer ever since and not looked back. I love using my EOs!