While most cosmetic products come with expiration dates, most people do not follow or even pay attention to them. When it comes to skincare products, some will place them in the fridge to help them last longer or take other similar measures. However, not all products have expiration dates or are safe to use outside of the date. So, does Vitamin C serum go bad?
Upon opening a Vitamin C serum, you generally have about three to four months before it expires. With daily use, most people will easily go through their serums before then. Therefore, the expiration of Vitamin C serum isn’t a concern for most when purchasing a typical serum and using it every day.
If your serum does expire before you realize it, it generally is not harmful or dangerous to your skin. The Vitamin C serum is just not as effective as a serum that is not expired. Thus, you do not need to worry if you find out you have been using an expired serum. To promote the best longevity of your serum, store it in a cool, dark place. Additionally, keep it in the opaque packaging it comes in.