The cold stimulation leads to local capillary contraction, and the localized cooling inhibits the body's own metabolic levels and alleviates inflammatory responses.The ice eye mask is simple, natural, convenient and effective. Simply put the eye mask in the refrigerator for 2 hours, or more, and then use it for 6-8 minutes.Helps improve the overall health of the eyes, and is reusable and environmentally friendly. Reduces eye puffiness Helps prevent premature skin aging Reduces inflammation1.Put it in the refrigerator 2 hours or more,(attention: NOT in the freezer). 2.The product is tested by CPSC-certified laboratory and made of safe and non-toxic materials. 3.If you are allergic to ice-coated products or are not suitable for frozen products, please do not purchase this product. 4.Do not use this product if your health are uncomfortable or have symptoms such as headaches. 5.Please do not use this product for children under the age of 12.Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.