What is the pH range for alkalis?

The pH range for alkalis is recognized as being from 8 to 14. This range indicates that a solution is basic, meaning it has more hydroxide ions (OH-) than hydrogen ions (H+). At a pH of 7, a solution is neutral; below this pH, solutions are classified as acidic, while those above 7 are considered basic or alkaline.

In practical terms, solutions with a pH of 8 are mildly alkaline, and as the pH increases towards 14, the alkalinity intensifies. This is essential knowledge in beauty and skincare, as many products utilize alkalis to alter the skin's pH, affect oiliness, or help in the treatment of certain skin conditions. Understanding this pH range is crucial for professionals to formulate effective beauty treatments and ensure safety in their applications.