What is the typical pH range for most cosmetic products designed for the skin?

The typical pH range for most cosmetic products designed for the skin is between 4.5 and 5.5. This range is important because it closely aligns with the natural pH of human skin, which is generally around 5.5. Maintaining a slightly acidic environment on the skin is crucial for preserving the skin's protective barrier and overall health.

Formulating products within this pH range helps to ensure that they are gentle and compatible with the skin, minimizing the risk of irritation and supporting the natural microbiome. Products that fall outside this optimal pH range, such as those with a higher pH (6.0 or above), may disrupt the skin's balance and lead to dryness or irritation.

On the other hand, products formulated at a significantly higher pH (like 7.5 to 9.0) can be too alkaline, potentially harming the skin barrier and causing issues like increased sensitivity or acne. Therefore, the pH range of 4.5 to 5.5 is essential for effective skin care, ensuring products are both safe and beneficial for maintaining healthy skin.