notizie-1 — antioxidants

The increase in air pollution over the years has significantly impacted human skin. The skin is exposed to ultraviolet radiation (UVR) and environmental air pollutants such as polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs), oxides, particulate matter (PM), ozone (O₃), and cigarette smoke. Although human skin functions as a biological shield against pro-oxidative chemical and physical air pollutants, prolonged or repetitive exposure to high levels of these pollutants can have profound negative effects. Such exposure has been linked to skin aging, as well as inflammatory and allergic skin conditions, including atopic dermatitis, eczema, psoriasis, and acne. Among the most...

Research Summary:  Natural substances have traditionally been used in skin care for centuries. There is now an ongoing search for new natural bioactives that not only promote skin health but also protect the skin against various harmful factors, including ultraviolet radiation and free radicals. Free radicals, by disrupting defense and restoration mechanisms, significantly contribute to skin damage and accelerate aging. Natural compounds present in plants exhibit antioxidant properties and the ability to scavenge free radicals. The increased interest in plant chemistry is linked to the growing demand for plant materials as natural antioxidants. This review focuses on aromatic and medicinal...

Research Summary: The skin is constantly exposed to various environmental stresses, particularly the damage caused by pollution and ultraviolet (UV) radiation. As a consequence, the outer layer of the skin can be negatively impacted by the harmful influence of some of its surface components. The mechanisms involved in the degradation processes promoted by UV radiation are driven by the direct absorption of radiation via cellular chromophores, the formation of excited states, and the consequent chemical reactions. In addition, photosensitization mechanisms occur, in which UV light is absorbed by sensitizers that become excited, leading to the formation of reactive oxygen species...

Research Summary: In recent years, interest in the health effects of natural antioxidants has increased due to their safety and applicability in cosmetic formulations. Nevertheless, the efficacy of natural antioxidants in vivo is less documented than their prooxidant properties in vivo. Plant extracts rich in vitamins, flavonoids, and phenolic compounds can induce oxidative damage by reacting with various biomolecules while also providing antioxidant properties.Because the biological activities of natural antioxidants differ, their effectiveness in slowing the aging process remains unclear. This review article focuses on the use of natural antioxidants in skincare and the possible mechanisms underlying their desired effects,...