This is a 10ml bottle of Peppermint essential oil (Mentha Piperita) with an orifice dropper.  peppermint essential oil is steam distilled from the leaves and flowers of the peppermint plant.  It has a very intense peppermint aroma and is far more concentrated than other essential oils.  Peppermint essential oil contains menthol which induces a cooling sensation.  It is commonly used to help ease tension headaches and muscular aches and pains.

For additional information, check out aromaweb.com for essential oil profile.