This powerful hydrosol is not to be used undiluted on the skin. It is warming, and has a high capacity for killing bacteria, viruses, and fungus- which is why it can be used medicinally for gum disease and colds and flus- sprayed directly into the mouth. It also can be diluted to 10% or less, in skin formulations. This beautiful hydrosol is made from fresh organic farm-grown Thymus Vulgaris, or French Thyme.