เซรั่มลดริ้วรอยและกระชับผิว — คอลลาเจนจากพืช 1% + วิตามินซี 10%

After about two weeks of using this serum, I can already see a difference in how firm my skin feels around my jawline. The 10% vitamin C really seems to be working to brighten up some sun spots too, though I wish the bottle lasted longer for the price.