What is the normal pH range of healthy skin?

Healthy skin typically has a normal pH range of 4.5 to 5.5, which is slightly acidic. This acidity plays a crucial role in maintaining the skin's barrier function and supporting the skin microbiome. The slightly acidic environment helps to inhibit the growth of harmful bacteria and fungi while promoting the proliferation of beneficial microorganisms.

This pH range also aids in the proper function of enzymes that are essential for skin regeneration and repair. When the skin's pH balances within this range, it helps maintain moisture levels and overall skin health. A deviation from this range can lead to various skin issues, including dryness, irritation, and increased susceptibility to infections.

Understanding the normal pH range of healthy skin is essential for skincare formulations and practices, as products that are too alkaline or too acidic can disrupt the skin's delicate balance, potentially leading to adverse effects on skin health.