Dr. T. G. Randolph, an allergist, has found that this and many other cosmetic chemicals cause petro-chemical hypersensitivity. The allergic reactions can become quite serious in time, leading to arthritis, migraine, hyperkinesis, epilepsy and diabetes. The fact that mineral oil does not penetrate the skin well makes it inappropriate for use in an absorption base in a skin cream of any kind. In fact, mineral oil-containing cosmetics can produce symptoms similar to dry skin by inhibiting the natural moisturizing factor of your skins. Petrolatum, paraffin or paraffin oil and propylene glycol are other common cosmetic forms of mineral oil.
Mineral oil has a tendency to dissolve the skin's own natural oil and thereby increase dehydration.
Serious carcinogens are commonly found in Mineral Oil. There are no legal boundaries for the term. Products must be pH balanced for the skin and hair. Acidity increases as the pH number decreases, and alkalinity increases as the pH number increases. Usually the pH of a cosmetic will not change the natural pH of the hair or skin because the hair and skin contain keratin, fatty acids and other substances that adjust the pH levels with which they come into contact.