When used as directed, the Zeno Acne Device is 90 percent effective, according to its FDA clinical trials [source: NASA]. But what is "as directed"? To understand that, you must first realize that not all acne is created equal.
There are actually several different types of acne, but they all from when excess oil mixes with dead skin cells to clog pores, creating an environment where P. acnes bacteria can thrive [source: WebMD]. When these impacted pores push out through the follicles, they form whiteheads or blackheads. But sometimes these clogged pores don't break the skin -- they form painful pustules or hard nodules that appear red and swollen due to the inflammation of the surrounding tissue [source: WebMD]. This type of acne can be especially difficult to treat with topical creams and ointments [source: American Academy of Dermatology].
The Zeno acne device is specifically designed to treat pustules or nodules before they fully form -- both the type of acne and the timing of treatment are essential to its effectiveness [source: Zeno]. Because this type of acne typically begins as a sore spot on the skin, it's fairly easy to identify. If you use the Zeno before the pustule fully forms, there's a 90 percent chance the potential pimple won't progress into a painful protrusion. Individuals may have varied results with the Zeno, but if you use it according to its operating instructions, your odds of success are good.
For the Zeno to be 90 percent effective, you have to use it correctly. Read on to learn how.