| 초록 |
The aim of this study is to develop stable cosmetics containing ascorbic acid. Ascorbic acid is become unstable in the aqueous phase by oxygen, light and alkali.In this study, we prepared many samples changed the polyols and emulsifiers. Then we stored all the samples at room temperature and 42℃ for 6 weeks and identified the stability using HPLC regularly. As a result, we found that glycerin was the most appropriate polyol for stability of the ascorbic acid. Also the technique of anhydrous emulsification stabilized ascorbic acid than P/S emulsification. Also, P/S emulsification, glycerin was more stable than propylene glycol. By the results we suggest that unstable ascorbic acid could be stabled by anhydrous emulsification method and this basic data could be applied to stabilization methods for cosmetic products. |
