The 250 ml square Mascara Glass Bottle with 31.5 mm ROPP Neck is a food-grade certified, FSSC 22,000 compliant, 100% non-toxic and 100% lead free, high-quality, clear (flint), and microwave and dishwasher safe. These glass Bottles are chemically inert and unreactive. The glass bottle is designed for packing chili sauce, oils, vinegar, etc.