Glass Bottles is green, it designs to protect the essential oil against UV rays. Green glass bottle has excellent sealing, never leak liquid. And these bottles are washable.Bottle has multiple uses, such as massage oil, aromatherapy essential oil blends, essential oil mixer bottle, cosmetic perfumes, laboratory, and chemicals. 10ml travel size is portable and perfect for storing perfumes,colognes,essential oils blends,and samples to share to friends and family.PLEASE NOTEA selection of Caps and Tops will be available.