These cobalt blue 1oz glass bottles, featuring a black dropper bulb, are essential for storing and dispensing various liquids around the house. They are perfect for holding cleaning supplies, personal care products, and beauty items. I use them for DIY projects with essential oils, colognes, cosmetics, perfume oils, beard oil, hair oil, skincare oil, massage oil, tinctures, and more. The long dropper allows for the accurate dispensing of liquids in small quantities, enabling controlled dispensing around the house.