Does Lack of Water Cause Hair Loss? The Dehydration Connection
                                
                                
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                                    4 min read                                
                            
                                The human hair shaft is composed of approximately one-quarter water, a clear indicator of moisture's critical role in its structure and health. Therefore, the question 'Does lack of water cause hair loss?' is more than speculative, as dehydration can significantly impact hair vitality from the inside out.