It's not new, been around for decades I think.
Tea tree oil is used in a lot of skin care products, shampoos, hand soaps, toners, etc.... TTO has been around for a very long time. Every couple years a company will add TTO into their new line of products and claims it's a new cure-all in their promotions/ads.
Just like with all soaps & oil. Keep it out of your eyes.
If you have acne, the ONLY time you should touch your face is during CLEANSING or & application of moisturizer.
Also buy 12 pillow cases (white) & change them out with a freshly laundered pillow case every 24-48 hours. I recommend white because you can use bleach on your pillowcases & towels to kill any acne causing bacteria that regular detergent might miss.
Same tip for towels. Use white towels & don't dry your face with a towel that wasn't washed with bleach.
Try out the pillowcase thing for 2-3 weeks & you should notice a improvement in your complexion in about 14 days.