North Carolina Cosmetic Arts Practice Exam

The recommended pH level for skin care products is 4.5 to 5.5, making this range optimal for maintaining the skin's natural balance. The skin has an acidic pH, often referred to as the "acid mantle," which plays a crucial role in protecting against harmful bacteria and maintaining moisture. A pH within this range ensures that products effectively support the skin's barrier function.

Formulating skin care products within this pH range is important because it minimizes the risk of irritation and preserves the skin's natural flora. When products fall within this pH level, they can hydrate the skin without disrupting its natural protective mechanisms or causing adverse reactions.