Stacked Skincare acne device used technology that kills acne causing bacteria and calms inflammation. Thoroughly cleanse your skin and pat dry. Press and hold the power button to turn on the device. Dampen your hands slightly and touch the silver strips on either side to activate the device. Place the ceramic head flush over the treatment area, moving on to the next area of the face after 2-3 minutes. As the high frequency current is generated, the device will make crackling sounds and you will feel a mild tingling sensation on your skin. Treating the entire face should take no longer than 15-20 minutes.