Читать книгу pH of the Skin: Issues and Challenges - Группа авторов - Страница 81

It was believed that some emollient-based finish products increase the skin pH. Recent investigative results showed that the traditional method of measuring the pH on the emollient-coated skin does not give an accurate measure of the surface pH of the skin. In fact, the tested petrolatum-based emollient creates a protective barrier and helps maintain the healthy acidity of the skin. Thus, our work provides important evidence that certain emollient-based skin products do not alter the pH of the skin and can also help maintain a healthy “acid mantel.” This is a previously unrealized benefit to consumers and this new learning about “coated” skin should be taken into consideration by other researchers in the field when measuring skin pH. We have also identified a potential pattern between perceived sensitive skin and pH. From our current learnings, researchers and clinicians measuring skin pH in clinical studies should keep the gender- and age-based as well as perceived skin type differences in pH and ought to add an exclusion criteria of “no use of any lotion/emollient/wash/etc. prior clinic visit” when skin pH is planned to be measured.