Croda has announced the results of a new study that proves its Solaveil SpeXtra titanium dioxide dispersions can protect skin against the formation of free radical species when exposed to near-UV or high energy visible (HEV) light and highlights the importance of using broadspectrum, photostable protection for minimising the risk of free radical damage to the skin.
Using a novel in-vitro electron spin resonance (ESR) technique, the concentration of free radicals generated in a synthetic skin replica when exposed to near-UV(HEV) radiation from a solar simulator, reduced significantly when the skin was protected with a formulation containing Solaveil SpeXtra compared to skin protected with the same formulation containing another grade of titanium dioxide or unprotected skin.
Near-UV (HEV) light, which is just beyond the cut-off from the UVA to the visible region of the electromagnetic spectrum (380 nm - 500 nm), has been linked to degradation of collagen and elastin resulting in the formation of wrinkles and premature ageing. Solaveil SpeXtra can absorb at these wavelengths and hence provides a physical shield to protect the skin against free radical damage in the near-UV (HEV) part of the spectrum.
