The pH of our Jojoba & Enzyme Radiance Mask is 3.75. The pH is a numeric scale that indicates how acidic or how alkaline something is. If you alter your skin's pH (which normally sits at a pH of 4.7) it is thought to alter how healthy the skin is. When choosing an AHA/BHA exfoliant, you'll want to find a product with a pH of less than 4.