Your skin is a wall, but it’s not made of concrete. It’s designed to retain most of the skin’s moisture and to keep most external contaminants out. Most, but not all. The skin releases some moisture to keep the outer layers hydrated, to cool skin down when the body is overheating (AKA, sweating), and it sheds moisture-carrying skin cells all the time. It also absorbs moisture from the outside world.
This semi-permeable system is effective, but there are risks. There’s lots of bad stuff out there – some of which is in the very products people rub on their skin to make it look or feel better. Some synthetics permeate the skin’s barrier and go right into the body, where they can stay put. Take sunscreen chemicals – a recent study showed levels of estrogen-like sunscreen chemicals in the blood stream and umbilical cord of people. Other studies have shown the average American has hundreds of synthetics in their bloodstream, many of which got there through topical application.
The point? It’s very important to pay attention to what you put on your skin. That goes double for mothers and babies, who are at particular risk for permeation and systemic damage. It means people should pay particular care in certain areas of their bodies, where skin is thinner or there are mucous membranes (like lips). They should keep their eyes out for nanoparticles (found in many skin care products and in particular in sunscreen), which are designed to permeate the barrier. Fortunately, Sana makes it easier.
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