What is the pH range of healthy skin?

The pH range of healthy skin is recognized to be between 4.5 and 5.5. This slightly acidic environment plays a crucial role in maintaining the skin's barrier function. The acidity helps to support the skin's natural flora, protects against harmful microorganisms, and is essential for the enzymatic processes that occur at the surface of the skin.

When the skin's pH stays within this range, it promotes healthy skin renewal and can prevent various skin conditions, such as acne and dermatitis, which may occur when the balance is disrupted.

Higher pH values, such as those in the ranges mentioned in the other options, would be less favorable for skin health. A pH above 5.5 can lead to a compromised barrier, while values that are too acidic could indicate potential irritation or damage to the skin. Therefore, maintaining a pH within the 4.5 to 5.5 range is vital for optimal skin health and function.