The second letter (E) defines the level of exposure and protection of the skin against the multitude of aggressions throughout the day, such as solar radiation, atmospheric pollution, tobacco, stress, thealcohol, etc. Indeed, these external sources generate free radicals, unstable and highly reactive molecules that can have a lasting impact on the skin. However, this biochemical reaction is normal in all living organisms that consume oxygen.
However, in the event of an imbalance between the production of free radicals and the body's ability to naturally eliminate them, oxidative stress sets in and problems arise. Indeed, these reactive forms of oxygen contribute to the degeneration of skin cells, both at the level of the epidermis and the dermis. All the essential constituents of the skin (collagen, hyaluronic acid, elastin, lipids, DNA) find themselves under attack, thereby inducing damage and dysfunctions.
Cellular oxidation can thus affect the structure of the skin, causing a speeding up of the skin ageing process or a cancer. Visible signs of ageing may start to appear such as initially superficial wrinkles that become increasingly deep, less toned skin and a duller complexion, and this can occur prematurely. To curb their action and thus prevent premature skin ageing, the daily application of antioxidant-based treatments (vitamin C, ferulic acid, resveratrol...), in addition to an appropriate sun protection , is recommended.