What is the pH of neutral solutions?

The pH of neutral solutions is 7. This value serves as the midpoint on the pH scale, which ranges from 0 to 14. In this scale, a pH of 7 indicates a balanced concentration of hydrogen ions (H+) and hydroxide ions (OH-), which means the solution is neither acidic nor basic.

In pure water at 25 degrees Celsius, the concentrations of H+ and OH- ions are equal, resulting in a pH of exactly 7. This neutrality is critical in many applications, including skincare and chemical formulations, as it promotes stability and compatibility with the skin. Solutions with a pH below 7 are considered acidic, while those with a pH above 7 are basic. Understanding pH levels is essential for estheticians when choosing products and treatments that maintain skin health and balance.