Making plenty of creamy lather is necessary to wash off the dirt and impurities clogged in pores. With using rich and creamy lather, the dirt and impurities clogged in pores are loosened and come up to the surface of the skin, then removed out finally.
Because of the surface tension inside the bubble/lather, which is also considered as the absorption power of bubble/lather, if bubbles in lather are small enough to be in the pores, the clogged dirt and impurities can be removed easily.
It is very important for a proper face washing to create plenty of creamy lather and make all bubbles in lather small enough. Royal Herb Rich Foam Treatment Cleanse can create plenty of rich and creamy lather. The bubbles in this rich and creamy lather can enter in pores easily, help to envelop the dirt and impurities clogged in pores into the lather.