What does the pH scale measure in cosmetology?

The pH scale is a crucial concept in cosmetology as it measures the acidity or alkalinity of products. The scale ranges from 0 to 14, where a pH of 7 is neutral, values below 7 indicate acidity, and values above 7 indicate alkalinity. Understanding the pH level of products is essential for professionals in the beauty industry because it can affect how products interact with hair, skin, and nails.

For instance, shampoos and conditioners often have specific pH formulations to align with the natural pH of hair. Using products with a pH that is too high or too low can lead to undesirable effects such as dryness, irritation, or damage, especially to color-treated or chemically treated hair. By recognizing the pH of a product, cosmetologists can make informed choices that promote healthy hair and skin.

The other options do not pertain to the pH scale: the color of products relates to their appearance and marketing aspects; viscosity describes the thickness or fluidity of a product, which influences application but not its chemical reactions; and fragrance pertains to the scent of products, which, while important for customer satisfaction, has no relation to the chemical behavior influenced by pH. Therefore, the correct interpretation of the