Understanding this chemistry is critical to selecting the correct peel solution for your clients.There may be more confusion and misunderstanding about pH and how it affects a product’s efficacy than any other formulation criteria in the professional skin care industry. Most people still associate the percentage of an acid with its efficacy—a higher percentage acid being more effective and aggressive. In fact, it is actually the pH of an acid that is the major driver of the potency of a product. If you use peels in your skin care facility, understanding this chemistry is critical to selecting the correct peel solution for your clients.