How many drops of vitamin C do you need to apply? The guide to correct application
                                
                                
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                                    6 min read                                
                            
                                Over 90% of a topical vitamin C serum’s benefits can be achieved with just 20% concentration, with diminishing returns for higher concentrations. Understanding the right amount to apply is key to achieving brighter skin and antioxidant protection without overdoing it. A conservative approach often yields the best, most consistent results.