It is very helpful to Relieves Eye Fatigue and Releases Eye Pressure , and prevent black eye and dry eyes puffiness. Put it in the refrigerator 2 hours or more , Then apply it on your eyes for about 6 minutes each time. The product is tested by CPSC-certified laboratory ,Gel eye patch is produced with environmental friendly condensate water and purified water. It is sealed with cold-resistant soft PVC, containing no toxin and no latex.