This study conducted a comparative experiment with tap water and hydrogen water to verify whether hydrogen water, generated from electrolysis, could affect facial skins. The experiment tested twenty four men and women, who are from twenties to forties, using tap water for twelve people in the control group and hydrogen water for twelve people in the experimental group, for four weeks. From the four-week experiment checking the skin changes thirty minutes after facial cleansing, this study could confirm that facial skin pores was 27.97% lower for the experimental group (p<.01) compared to the control group. The amounts of pigmentation was 17.37% lower (p<.01) and wrinkles were 36.9% lower (p<.001), respectively. In the case of checking skin changes for two hours after facial cleansing, similar results were found except porphyrin. Thus, it was shown that facial cleansing using the hydrogen water, generated from electrolysis, had better skin improving effects compared to the tap water facial cleansing.