The sun's damaging effects on our skin are well-documented, but did you know that vitamin C serums could be an extra layer of defence against sun-induced damage? While they don't block UV rays like sunscreen does, research suggests they can neutralise free radicals caused by sun exposure and environmental pollution. These unstable molecules contribute to skin ageing, so it's little wonder scientists are exploring the benefits of antioxidants in skincare.
According to Professor Rosalind Simpson from the University of Nottingham, sunscreens perform two crucial roles: blocking UVB rays that cause sunburn and significantly contributing to skin cancer, as well as filtering UVA radiation responsible for signs of ageing. Vitamin C, on the other hand, works by targeting free radicals that can damage skin cells and break down collagen – a key factor in skin firmness.
Antioxidants have garnered significant attention in skincare for their potential to improve skin appearance. They're thought to provide an 'additional line of defence' against cellular damage caused by free radicals. Crucially, this mechanism differs from that of sunscreen, which physically or chemically blocks UV radiation from penetrating the skin.
A 1996 study shed light on the supplementary role of antioxidants in sun protection. Researchers examined the efficacy of vitamins C and E with and without sunscreen and found that vitamin C enhanced protection against UVA-induced skin damage when used alongside sunscreen. The results suggest that combining antioxidants with established sun-protection products could offer extra protection, rather than relying solely on standalone solutions.
While the findings are promising, Professor Simpson stresses that no antioxidant product can replace the need for high-quality, broad-spectrum sunscreen. She advises prioritising sunscreens offering protection against both UVA and UVB rays and incorporating sensible sun habits – consistent application and reapplication of sunscreen, along with limiting direct sun exposure during peak hours to safeguard skin health.