Side cypress leaf is a Chinese herbal medicine, if you use the side cypress leaf for external use, there is a certain oil control or cleaning effect, and then there is a certain side cypress to improve the function of local blood circulation, if you use the side cypress leaf to clean, for the scalp area can play a role in cleaning, control oil secretion or promote blood circulation. However, if the plant is used directly for the so-called soaking cypress leaves, or add alcohol scrubbing, garden plants may have pesticides or pest removal drugs, if not clean, the solution dissolved in water and washed into the hair, may cause irritation or allergic dermatitis of the head. For patients who have hair problems, it may further aggravate the risk of hair loss, and then there is through the leaves of cypress soak washing, or adding alcohol and other scrubbing, and can not fully achieve the effect of Chinese medicine extraction, so it is not good to play the role of cypress leaves, for the head and washing with water is not much different.