
Glass Container
Cobalt Blue Bottle
The cobalt blue bottle gets its deep blue color from cobalt oxide added during the glass melting process. This isn't a surface coating; the color runs through the entire glass body, so it won't chip, fade, or leach. Cobalt blue glass blocks wavelengths below 450nm, absorbing roughly 50-70% of UV radiation. That puts it between clear glass (minimal protection) and amber glass (maximum protection) in terms of UV filtering.
Cobalt blue bottles are a popular choice for essential oils, herbal tinctures, natural skincare serums, and homeopathic remedies.
