Essential oils have a certain effect on beauty, but are not recommended for use during menstruation. Because there are many types of essential oils on the market, the ingredients contained in them are also varied, may contain some volatile nature of the stimulating components, and menstruation female resistance decline, if the use of menstruation can easily lead to allergic symptoms, or stimulate the ingredients through the skin into the bloodstream and cause menstrual changes, such as an increase in the amount of menstruation, menstruation period is prolonged, and severe hemorrhage can occur. In addition, if you use some unqualified essential oils, they may contain heavy metals and other harmful substances, long-term use will not only cause damage to the human body, serious may lead to amenorrhea, infertility and other serious consequences. Therefore, it is recommended that women who use essential oils must choose qualified products, usually used in moderation, do not use during menstruation, because menstrual immunity is easy to allergic reactions.