What pH range is referred to as basic?

The pH range referred to as basic or alkaline starts from 7.1 and goes up to 14. In this context, a pH of 7 is considered neutral, meaning it is neither acidic nor basic. As the pH value increases above 7, substances become increasingly basic. Therefore, any pH level from 7.1 to 14 indicates a basic environment.

Understanding this is crucial in cosmetology, especially when working with various products that can affect the hair and skin differently based on their pH level. For example, many hair care products aim for a slightly acidic pH to help close the hair cuticle, while alkaline products can open it and are often used in chemical treatments.

While the other ranges provided indicate varying levels of acidity or neutrality, only the range of 7.1 to 14 accurately identifies the basic range, which is essential knowledge for professionals in the beauty industry.