SKS offers blue glass boston round bottles with black bulb glass droppers in the 1 oz size for smoothly dispensing a wide range of products. The bulb droppers include a plastic cap, rubber dropper, and glass pipette for compatibility with a wide selection of ingredients. The cobalt blue glass bottles provide adequate UV protection for light-sensitive components, keeping your products maintained when storing. Glass boston round bottles feature sloped shoulders and a narrow neck and are non-porous and impermeable. Bulb glass droppers paired with boston round bottles could be a top choice for packaging serum, cosmetics, essential oils, and more.