The use of Infraveil IT-100 in Personal Care Formulations for Infrared Protection

摘要

Solar radiation that reaches earth's surface contains three main spectral bands: ultraviolet radiation (UV, wavelength 290-400 nm), visible light (400-760 nm), and infrared radiation (IR, 760-4000 nm). Infrared radiation is subdivided into IRA(760-1440 nm), IRB (1440-3000 nm) and IRC (3000-4000 nm). It is well known that UV radiation can play an important role in premature skin ageing and can contribute to the development of skin cancer. Thus, protection against UV radiation is vitally important to the end-user. Titanium dioxide has long been used as an attenuator of UV radiation. However, at the surface of the Earth, UV radiation only accounts for around 7% of total solar light. Infrared radiation accounts for over half of the total solar radiation at the Earth's surface, most of which is IRA radiation. It is also reported that IRA penetrates the skin deeper than visible light and UV radiation. Consequently, it is understood that IR radiation, particularly IRA radiation, can, like UV radiation, play an important role in skin damage, particularly premature skin aging.