1-3-2.Sebum membrane
	Emulsification ●The sebum and the sweat are quickly emulsified on the surface of the skin and the sebum membrane is made. There are two types of this states of emulsification. �@Oil-in-water type（Ｏ／Ｗtype）Oil has been distributed to water. �AWater-in-oil type（Ｗ／Ｏtype）The drop of water has been distributed to the oil. ※Ｏ：Ｏｉｌ　Ｗ：Ｗater The sebum membrane changes into the oil-in-water type by the situation though is usually covered its skin with the film of oily with the water-in-oil type. For instance, it becomes an oil-in-water type if moving and sweating as the sweat evaporates early, and it returns to the water-in-oil type again when the sweat pulls it. Sebum membrane always fits the situation of the skin, without also overlooking the slight change of the open air, temperature, etc. ※The entire skin has not been necessarily emulsified.
						ＳＱ：Squalene、 ＴＧ：triglyceride ＤＧ：Diglyceride ＭＧ：Monoglyceride ＦＦＡ：Free adipose ＣＨ：Cholesterol ＣＨＥ：Cholesterol ester ＣＥ：Ceramide ＳＰ：Sphingosine