Free radicals are highly reactive species that oxidize the cells of the epidermis. This phenomenon has a name, it is oxidative stress. It is one of the causes of accelerated aging of the epidermis. Vitamin C is a substance with the benefit of neutralizing free radicals and thus slowing down the appearance of wrinkles. In focus.
Free Radicals: Definition and Origin.
Free radicals are reactive oxygen species naturally produced by the body. Nevertheless, when cells are confronted with stress, they produce them in an excessive way. There are many sources of stress, the main ones being exposure to UVA rays, pollution, smoking, and a diet too rich in fats and sugars.
Free radicals are particularly unstable molecules because of their single electron. They tend to react with other molecules to form an electron pair, and then cause damage to cells, DNA and proteins in the body. Aging is thus accelerated and wrinkles appear on the surface of the skin.
The Action of Vitamin C Against Free Radicals.
Vitamin C, or L-ascorbic acid, is a water-soluble vitamin derived from the metabolism of glucose, present in the body and essential to its proper functioning. When applied to the skin, the skin benefits from its protection from oxidative stress. Its mechanism of action is based on a sequential donation of its electrons to neutralize free radicals. Moreover, several studies have shown that this molecule reduces the production of free radicals such as superoxide radicals, hydroxyl radicals and simple oxygen molecules. Thus, it is relevant to apply a vitamin C treatment in the morning to protect the skin from external aggressions.
The Use of Vitamin C in Skin Care.
In order to protect your skin from the excessive production of free radicals, we advise you to benefit from a vitamin C skin care product in the morning and evening. Typology has developed five products containing this active ingredient in different concentrations: the radiance face serum, the antioxidant face cream, the radiance tonic, the tinted serum and the wrinkle and firmness loss serum.
HUMBERT P. Topical vitamin C in the treatment of photoaged skin. European Journal of Dermatology (2001).
FARRIS P. K. Topical vitamin C: a useful agent for treating photoaging and other dermatologic conditions. Dermatologic Surgery (2005).