Different compounds are analyzed from a preventive and reparative used. It is observed the use of many of them can have a dual action, and these compounds can be used with a hydrating and antioxidant purpose moreover the effects taken with different colors and intensity.
Therefore proteoglycans, hyaluronic acid, peptides nulante, melatonin and DHEA, two recently used hormones, are studied. Among the antioxidants, vitamin E and polyphenols seem to be more evidence that supporting their beneficial effect.
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