What does the term "pH" stand for in cosmetology?

The term "pH" in cosmetology stands for "Potential Hydrogen," which refers to the concentration of hydrogen ions in a solution. In the context of skincare and hair care products, pH is a critical factor because it affects the health and appearance of the hair and skin.

A pH scale ranges from 0 to 14, with values below 7 indicating acidity, 7 being neutral, and values above 7 indicating alkalinity. For example, human skin has an optimal pH range of about 4.5 to 5.5, which helps to maintain its protective barrier against bacteria and environmental factors. Similarly, hair products are formulated with specific pH levels to ensure they can effectively cleanse and nourish the hair without causing damage. Understanding pH helps cosmetologists make informed decisions about product selection and treatment protocols for their clients to achieve the best possible outcomes.