How to tell if vitamin C is good?
                                
                                
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                                    4 min read                                
                            
                                Over 85% of supplement users in the U.S. report difficulty identifying quality products. For vitamin C, this is especially true due to its unstable nature. Knowing how to assess quality, check for freshness, and ensure proper storage is crucial for reaping the health and skincare benefits of this powerful antioxidant.