Our 30 ml Blue Glass Essential Oil Bottle are the perfect way to package essential oils, aromatherapy based and other specialty products that are light sensitive. These popular glass bottles are a staple in any aromatherapists collection as they provide products with a high quality, professional and sophisticated look. Possessing an 18-400 neck, we have many cap options available for these bottles to create a unique, one-of-a-kind look for your products.