The results also highlight the importance of using broad spectrum, photostable protection for minimising the risk of free radical damage to the skin.
High Energy Visible Light (HEV) is high-frequency light in the violet/blue band from 380 to 500 nm in the visible spectrum and shares the aging spectrum of Solar Radiatio along with UVA and UVB.
The accumulation of daily sun exposure leads to premature aging of the skin, linked to the development of wrinkles, age spots, skin cancer and dry skin.
In addition, Solar Radiation on your scalp skin leads to damage to your scalp's vascular and lymphatic network, forehead and neck sagging, premature hair loss and hair greying.
The new Croda study shows that its sunscreen-specific product will combat these areas of skin damage.
Free radical reduction
The tests were carried out using a novel in-vitro electron spin resonance (ESR) technique to expose a synthetic skin replica to near-UV (HEV) radiation from a solar simulator.
The results showed that the concentration of free radicals generated 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 (380nm - 500nm), has been linked to degradation of collagen and elastin resulting in the formation of wrinkles and premature ageing,” says a statement from the study results.
“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.”