Natural Health News – The skin is constantly challenged, and often damage, environmental stress factors such as UV radiation and chemicals.
To address the UV radiation, various skin cells have developed a complex antioxidant defense system protective. These days we usually help along the process by using sunscreens. The problem with sunscreens is that many are made of undesirable chemicals , some of which have been shown to be carcinogenic. Knowing this search has been for some time for natural alternatives that do not contain ingredients of risk.
A new laboratory research published in the journal Experimental Dermatology shows a new agent of vegetable origin that protects the skin from the harmful effects of UV .
“We find that the active antioxidant licochalcone A, which is the main component of the extract from the root of the plant Glycyrrhiza inflata (Chinese licorice), is able to protect the skin damage following UV irradiation from within by strengthening systems own skin defense. Thus, plant extracts with the profile described are able to provide a protective shield from sun exposure and support going beyond the action of the filters solar regarding sun protection, “said Gitta Neufang, a researcher involved in the work of Beiersdorf AG, Hamburg, Germany.
licochalcone A has been previously shown to be an antioxidant, anti-irritant, and antiinflammatory substance that can help to provide protection to skin cells by neutralizing free radicals. This means that it has a role to play to help prevent damage to the environment and reducing hyperreactions and inflammatory skin reactions.
In order to test the effects of vegetable Licochalcone An active in cell culture, Neufang and colleagues isolated human skin cells and irradiated them with simulated sunlight imitating sun exposure. They were able to show that skin cells pretreated with licochalcone produce a greater amount of antioxidants, molecules’ self-protection. “
Working with the body
accordingly, significantly less damaging free radicals were detected in Licochalone a treated human skin cells. in addition, they also conducted a study in healthy volunteers show that the application of a lotion containing root extract licochalcone a -rich on the inner forearms for two weeks protected skin damage after UV irradiation.
These results show that the defense system of the skin can be stimulated by applying licorice extract. in combination with UV filters, therefore, this approach could provide superior sun protection, not only offering sunscreen physical biological, but also.
“Even with the best filter system sun protection (SPF 50 +) 2% of UV rays still reach the skin and cause damage. We hope that our study contributes to improve the effectiveness of sunscreens to protect against the harmful aspects of sunlight exposure. “We conclude Gitta Neufang.