Five drops of Essential oil in about 3-4 gallons of water doesn't hurt. I have a vicks (hot air) vaporizer–and you do not put it in the actual water .
Vicks Inhalant. Soothes and comforts with refreshing, aromatic vapours of eucalyptus and peppermint oils. Add directly to the water of your steam vaporiser, bowl of hot water or personal inhaler â€“ the essential oils disperse evenly and permeate the steam for extra relief.
Vicks Warm Mist Humidifier. I used essential oils in it with no problems.. you can insert Vicks VapoPads which are scented (menthol or lavender/rosemary).
VapoPads can be used with most brands of plug-in and waterless vaporizers.. Do not put essential oils in the tank of any humidifier as the oils can damage the .
Lastly, if you plan to add aromatherapy essential oil into your vaporizer or warm mist humidifier, the heating of the water can cause the oil to get heated. This may