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   How to Use After cleansing, apply the Zero One Day Exosome Shot to your entire face, avoiding the area near your eyes and lips. For the best results, we recommend using the Exosome Shot as the first step in your skincare routine. Gently rub and press with your hands to ensure that the needle-like formula is absorbed deep into your skin. Finish with Medicube’s Collagen Jelly Cream (or your daily water-based moisturizer). Usage Notes Avoid applying near the eyes and lips. For sensitive and delicate skin, we recommend conducting a patch test before use. To achieve optimal efficacy, please familiarize yourself with the instructions for use. You may experience a tingling, redness, itching, and heat sensation which may last for some time, but rest assured that this is a natural reaction to the Exosome Shot.   Net Wt 1.01 fl oz / 30 ml