How Do I Know If I Need Keratin? Your Comprehensive Hair Health Guide
                                
                                
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                                    5 min read                                
                            
                                The average person's hair is 90% keratin, and when this protein is depleted, hair often shows visible signs of distress like excessive frizz or a rough texture. To know if you need keratin, it is essential to assess your hair's specific symptoms and overall condition.