Introduction: UV radiation is related to skin cancers, photoaging and sunburn. It can be harmful for human skin, so it crucial have a protection against sun rays. Substances protecting people from are sunscreens, that block absorb radiation. The first sunscreen was discovered in 1928 and, since then, there been many concerns about its safety, efectiveness impant on the environment. Types of acc...

5. What are the implications of this study? Patients sometimes claim that, despite regular and routine use of sunscreen, they still develop “redness.” A discussion of proper ap p lication of sunscreen then ensues, and often one concludes that sunscreen compliance is really the issue. But is it? In this issue, Young and colleagues suggest otherwise. Stemming from the knowledge that UVA radiation...

Engineered nanoparticles are now well recognised to possess a range of apparently unique and as yet under-researched toxicities Safety concerns about such nanoparticles in cosmetics such as sunscreens are fuelled by consideration of factors such as their size, high mobility in the body and unusual reactivities. Yet, published research relied upon by safety regulators suggests there are no signi...

Solid lipid nanoparticles (SLN) were recently proposed as carriers for various pharmaceutical and cosmetic actives. These lipid nanoparticles can act as moisturizers and physical sunscreens on their own. Therefore, the full potential of these carriers has yet to be determined. The present study was aimed to determine and compare moisturizing and UV-protecting effects of different solid lipid na...

Objectives: The aim of this study was to evaluate cellular indicators, which change with exposure ultraviolet (UV) radiation and can be used as parameters for measuring sunscreens efficiency. Methods: Commercial strains L929 HaCaT cells (skin dermis epidermis, respectively), from the cell bank Rio de Janeiro, were exposed different doses UVA (350 nm) UVB (309 radiation. evaluation photoprotecti...

Exposure to ultraviolet B radiation in sunlight provides the mechanism for more than 90% of the vitamin D production in most individuals. Concern has been expressed in recent years that the widespread use of sunscreens, particularly those with high sun protection factors, may lead to a significant decrease in solar-induced previtamin D(3) in the skin, resulting in a vitamin D level which is con...

The risks of novel technologies, such as nano(bio)technology cannot be fully assessed due to the existing uncertainties surrounding their introduction into society. Consequently, the introduction of innovative technologies can be conceptualised as a societal experiment, which is a helpful approach to evaluate moral acceptability. This approach is illustrated with the marketing of sunscreens con...