In the ever-evolving world of beauty trends, few topics spark as much debate as the humble hair-washing routine. From the “no-poo” movement to the rise of dry shampoo dependency, the public has been bombarded with conflicting advice. However, medical consensus is beginning to coalesce around a specific frequency that balances aesthetic appeal with biological necessity: three to five washes per week. According to a panel of dermatological experts and trichologists, maintaining scalp hygiene is not merely a matter of vanity—it is the foundational requirement for long-term hair health. A consistent routine within this range facilitates the removal of accumulated sebum, environmental...
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