What pH value is considered neutral on the pH scale?

A pH value of 7 is considered neutral on the pH scale. The pH scale ranges from 0 to 14, with lower values indicating acidic substances (pH less than 7), higher values indicating alkaline or basic substances (pH greater than 7), and a pH of 7 representing a perfect balance between acidity and alkalinity. Pure water, which is a common reference for neutral pH, has a value of 7, making it the standard baseline for measuring the acidity or alkalinity of other substances. This neutral point is crucial in cosmetology, as many skin and hair products are formulated to maintain a pH close to neutral to avoid irritation and maintain the integrity of skin and hair.