Formulated with 93% of carefully extracted mugwort ingredient from Jirisan the Purity Therapy Essence soothes sensitive skin & balance oil & moisture level. It is a multi-functional product as it can also be used as a mask or as a mist. To use it as a mask you can soak cotton pads or a mask sheet in essence & place it on the skin. You can pour the essence into an empty mist bottle & spray it onto skin throughout the day when irritated.