Cats and dogs have very different natural skin pH levels, cats are about pH 6.0 and dogs about pH 7.5.   In comparison human skin is about pH 5.5.  Mr Wrinkles products are balanced to match the natural pH level of the pet they are created for, ensuring the products are much less likely to cause an imbalance in the natural microbiome of your pets skin.  For more information and research on cat and dog pH check out our blog post on the subject.