Karina Giglio (2013) quoted "The
skin's barrier, which is known as the acid mantle, is responsible for keeping
in lipids and moisture while blocking germs, pollution, toxins, and
bacteria," explains Patricia Wexler, M.D., a New York City dermatologist.
"To work its best, the acid mantle should be slightly acidic, at a 5.5 pH
balance. When it's too alkaline, skin becomes dry and sensitive; you may even
get eczema. You may also experience inflammation, which inhibits the skin's
ability to ward off matrix metalloproteinases [MMPs], the enzymes that destroy
collagen and cause wrinkles and sagging."
April Long (2011) wrote somewhat
paradoxically, while an acidic pH is optimum for the epidermis, the body's
internal pH should be mildly alkaline. Blood needs to maintain a narrow pH
margin of between 7.35 and 7.45 for cells to function properly—including those
in the dermis, or inner layer of skin, which are most robust with an alkaline
pH of 7.35.
So, we need to use products that would not upset our skin pH and consume alkaline food to be healthy and look pretty.
