Tingling Ampoule Tingling sensation is natural. You may experience a tingling sensation, which may last for some time, but rest assured that this is a natural reaction to the Zero Exosome Shot. Drawing upon the principles of microneedling, we've crafted a micro-sized, needle-shaped booster to target a range of skin issues. Enhanced with 15M patented Exosome shots, this formula physically delivers active ingredients to pores, providing daily intensive treatments for home use. Clinically validated to care for pore size, smooth skin texture, strengthen the skin barrier, and promote a radiant complexion. Non-comedogenic Tested to be Low-Irritating Gluten-Free No artificial color Net wt. 1.01 fl. oz. / 30ml