For long-term storage of a single oil, always use a dark glass bottle (amber is most common).
For blending, use a new, clean dark glass bottle of the appropriate size for your blend.
For carrying a roll-on blend, use a dark glass bottle with a stainless steel rollerball attachment.
Most bottles have a dropper cap assembly. This consists of:
A plastic screw cap.
A dropper insert (a rubber bulb and glass or plastic tube).
An orifice reducer (a small, clear plastic piece that fits in the bottle neck and controls the flow).
To dispense, simply hold the bottle upright and squeeze the bulb gently. For an orifice reducer, you invert the bottle and tap it lightly.
