What is the effect of a proper pH balance on hair?

A proper pH balance is essential for maintaining hair elasticity, which directly impacts the hair's overall health and manageability. Hair has a natural pH level that typically ranges from 4.5 to 5.5. When the hair is within this optimal pH range, the cuticle layer remains closed and tight, which prevents the hair from becoming brittle or prone to breakage. This tight cuticle structure allows for greater flexibility and resilience, enabling the hair to stretch and return to its original shape without sustaining damage.

In contrast, if the hair pH is too high (alkaline), the cuticle can become raised, leading to increased moisture loss and reduced elasticity. Conversely, if the pH is too low (acidic), it can lead to a rough and unmanageable texture. Maintaining a balanced pH, therefore, is crucial for promoting elasticity, which is vital for healthy, vibrant-looking hair that is less susceptible to styling damage and environmental factors.