This is mainly to add essential oil to toner or emulsion. At most, toner and lotion are pure plants, so the effect is good, so be sure to pay attention to the amount. After adding it, the normal skin care order will do, first toner, then lotion.
Essential oil is a volatile aromatic substance extracted from flowers, leaves, stems, roots or fruits of plants by steam distillation, extrusion, cold soaking or solvent extraction. Essential oils are divided into diluted (compound essential oils) and undiluted (unilateral essential oils). Essential oils are highly volatile and will evaporate quickly once they come into contact with air. For this reason, essential oil must be stored in a blue bottle that can be sealed. Once it is opened for use, the lid should be put back as soon as possible.