英文摘要 |
In recent years, with the progress of society, people increasingly focus on recreation and health. In Taiwan, a spa is one of the recreations considered for this purpose. Studies found that the sodium bicarbonate content in hot springs can absorb free radicals and has anti-inflammatory effects. Also, water that contains sodium bicarbonate is currently the best choice as base water in the cosmetics industry. While currently the use of hot springs in Taiwan has not been fully explored, these facts give hot springs the merits for further study in cosmetic and medical product development.This research aims to determine the cosmetic benefits of using hot spring on facial skin using different application modes and spring qualities. Two application modes are used; hot spring facial film and hot spring vapour. Also, four different hot spring qualities are used: Group A (RO water), Group B (Hydrogen Sodium Chlorine and Carbonic Acid Spring); Group C (Chloride Sulphur Spring); and Group D (Carbonic Acid Hydrogen Brine Spring).Group D and facial mask showed better moisturizing effect compared to the other groups. In terms of skin pH, all the groups are still within the 4.5-6 acceptable range but groups A, B, and D showed lower values. The skin sebum content increased for all the groups except for facial mask which showed no difference after application. In terms of epidermal hydration, all the groups including the facial mask registered no significant change while group A resulted in lower values. All groups exhibited insignificant change to the elasticity of the skin after application. |