The essential oil bottle set contains everything you need, amber glass Boston round bottles, each with quality tapered-Tip Glass Droppers. The Glass Bottle is made of Corrosion-resistant amber glass. Colored glass protects against chemical decomposition that your essential oils would be safely protected from damaging sunlight and the risk of rapid evaporation.The bottle not only can be used to store essential oils, coconut oils, moisturizing water, liquid, lotion, etc. but also can be portable and very convenient to use and fill, which is suitable for traveling or everyday use.A0647