Thanks everyone for the excellent input. Good to know. I spent a year studying the medicinal use of herbs and EOs and am well aware that, while lavender & tea tree applied "neat" is GRAS (Generally Regarded As Safe), that overuse can cause problems.
SHORT STORY
I still remember my first lye burn. It was early in my soaping career. I was dressed in full hazmat gear -- hair pulled back, goggles, gloves, long pants, closed-toe shoes and a lab smock. Determined to get it right! LOL Somehow during the process, a stray hair got loose, and, without thinking, I brushed it back with a gloved hand. Yee-Ouch! Burnt like a hot ember across my eyebrow!. At that time I had a bottle of 8 oz water + a tablespoon of vinegar. I used that to daub liberally on the burn, rinsing several times. I followed up with homemade herbal salve. Moral of the story, I still have the scar from that burn.
Some time later, I ran across the Gattefossé story and I've been using lavender on burns ever since -- more from cooking than soaping, I'm happy to report.
I thought twice before posting that info. Then I asked myself, what if the OP were me? What if it were my lip and tongue? And what if someone had a remedy that would heal without scarring but was afraid to post it. ??? That's when I decided to go ahead and share it. I am grateful to my colleagues who shared their vast information about the necessary cautions needed when using essential oils. I should have done, but all y'all stated the case so much better!