All of my aromatherapy blends sold in a 10ml bottle with glass dropper. These are great for adding oil to your Lava Stone Aromatherapy bracelet, refilling your nasal inhaler, adding oil to a diffuser or just to have on hand when needed. We use cobalt blue , glass bottles to help maintain the healing properties and aroma integrity of your oils. The eye dropper allows you to have full control over the amount of oil you are using.