What is the ideal pH range for skin?

The ideal pH range for skin is between 4.5 and 5.5. This slightly acidic environment is crucial for maintaining the skin's barrier function and supporting the natural microbiome. A pH in this range helps to keep the skin hydrated and protects against harmful pathogens and environmental stressors.

When the skin's pH strays outside this optimal range, it can lead to various skin issues. For instance, a more alkaline pH can disrupt the acid mantle, leading to increased dryness and susceptibility to infections. Conversely, an excessively acidic pH may cause irritation and other problems. Understanding the importance of pH in skin health is vital for those in the cosmetology field, as it influences product selection and treatment options.