There are dozens of cosmetic products for sale that supposedly working based on several cellular mechanisms, promise to make our skin firmer and erase our wrinkles. Dermatologists, however, agree in saying that these creams, including the most expensive and that its makers say is the result of the latest advances in science actually do much more than moisturize the skin.
of course it is undeniable that the hydration of the skin improves the appearance and elasticity. However, scientific studies have attempted to confirm the other rejuvenating effects of these cosmetics are scarce. – And most of it is inconclusive
But now, Robert Langer, known biologist and biotechnologist of the MIT Koch Institute (Institute Massachusetts technology, USA) and his colleagues may have been able to manufacture a substance applied to human skin in the form of cream or ointment, produce a “rejuvenation” artificial, giving temporarily a more youthful and healthy skin aged. It would not be the skin to become less flaccid, less wrinkles, like hawking cosmetics manufacturers -. But just look like one it for a few hours
More precisely, scientists say they have developed a synthetic material ( a polymer) which, when spread over the human skin, according to them creates a “second skin”, firmer and more elastic, thus reducing to clearly wrinkles and bags under the eyes. Their results, still preliminary, were published Monday in the online edition of the journal Nature Materials . And may have, in addition to cosmetic implications medical implications in the treatment of skin diseases -. Or, for example, protection against ultraviolet rays of the sun
Besides being our largest organ, the skin is an organ that is in direct contact with the environment. But as they age, it is becoming less firm and elastic, which reduces their ability to protect the body against toxins, microbes, radiation and other environmental damage.
As for the new material, form “a layer invisible that can provide a physical barrier, a cosmetic improvement and potentially be used as a vehicle to deliver drugs through the skin, “says co-author Daniel Anderson, Department of Chemical Engineering and the Koch Institute for Integrated Cancer Study (both at MIT), in a statement of the American institution. “These three things together could make this ideal material for use in humans,” he says.
It was almost a decade ago that these scientists decided to see if it was possible to manufacture a protective skin coating able to give back to skin a healthy, both for medical purposes such as cosmetics, reads the statement.
“We started developing this material eight years ago,” said Langer Publico. “It is a polymer silicone [called polysiloxane] whose molecular chains are organized forming a network”, explains. “We created a library of hundreds of variants of this polymer and analyze them one by one, looking for one who possessed the optical characteristics of safety and mechanical [firmness and elasticity] that best simulate the young and healthy human skin,” he adds. According to him, this is the first material to be developed with these qualities.
“Create a material that behaves as the skin is very difficult,” he said for his part, in a statement, co-author Barbara Gilchrest, of Massachusetts General Hospital in Boston. “Many experts have tried to do it, but the materials available so far did not have the flexibility or the necessary comfort and could cause irritation, in addition to not adapt to the natural movement of the skin and do not recover their initial shape” when they were distended, as with natural skin.
In laboratory tests, the material finally chosen by the team to have the best performance, which is both waterproof and breathable time, returning quickly to its original state after being stretched to over 250% of its dimensions (against 180% supported by the natural skin). And according to the authors, this elasticity found to be much higher than the other two dressings currently used to protect wounds, which are the sheets of silicone gel and polyurethane films.
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