What is the role of pH adjusters or buffers in skin care products?

The role of pH adjusters or buffers in skin care products is primarily to protect the skin. Maintaining the proper pH balance of a product is crucial because the skin's natural barrier function is closely linked to its pH level. Most healthy skin falls within the slightly acidic range of 4.5 to 5.5. A product with an appropriate pH helps to ensure that it does not disrupt the skin’s natural acidity, which can protect against irritants, pathogens, and other environmental stressors.

Using pH adjusters helps to stabilize formulations and ensures that active ingredients work effectively while remaining gentle on the skin. This balance is essential for preventing potential skin issues, such as irritation or breakouts, that can arise from products that are too alkaline or too acidic. Thus, pH adjusters play a vital protective role in skin health and the overall effectiveness of skin care products.