THE BENEFITS OF TOPICAL VITAMIN C (L-ASCORBIC ACID) FOR SKIN CARE ANO UV PROTECTION
1999
Summary Yitamin C (L-ascorbic acid) is one of the body's primary protections from reactive oxygen damage, but it is depleted during ultraviolet (UV) injury. Because body contro! mechanisms limit the amount of ingested vitamin C available to skin, topica! antioxidant therapy becomes an attracti ve way to tar get vitamin C directly into ski n, provided the unstable L-ascorbic acid molecule can be stabilized and penetrate skin - conditions which have precluded use in topica! fo rmulations - unti ! recentl y. A new technology for stabilizi ng high concentrations of L-ascorbic acid that get into skin has been developed. The resul t: it is now possible to deliver more vitamin C into ski n topicall y than ever can be achi eved by diet, thus adding to the body's natural reservoir of antioxidant protection. Topica! vitamin C (L-ascorbic acid) therapies provide severa! benefits for skin. Topica! vitamin C protects against UV radiation , including UVA - an action spectra link.ed to cause photoaging and some ski n cancers, a nd one that is not protected fu ll y by currently-available sunscreens. Topica! vita min C prevents DNA mutations and UV immunosuppression, a reaction that occurs in over 90% of ali skin cancer patients. Topica! vita min C controls inflammation and reduces erythema. Topica! vitamin C promotes wound healing and stimulates coll agen synthesis.
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