The effects of visible light and infrared radiation have not been, until recently, clearly elucidated. Iron oxide is a common ingredient in foundations that can provide protection against visible light, particularly blue light. ‘An overview of ultraviolet radiation, sunscreens, and photo-induced dermatoses’. ‘Near visible light and UV photoprotection in the treatment of melasma: a double-blind randomized trial’. 2020 Feb 20;17(4):1357. doi: 10.3390/ijerph17041357.  |  In fact, in one study, daily application of a broad-spectrum sunscreen over a four-year period led to younger looking skin. 2020 Mar;36(2):135-144. doi: 10.1111/phpp.12523. The effects of visible light and infrared radiation have not been, until recently, clearly elucidated. HEV light is also present in computer screens and mobile phone screens, so we are exposed much more frequently than we think. As the disease progresses further, the blurry spot may grow in size. In fact, it significantly increases the overall photo-protection [15]. Festival of Sacrifice: The Past and Present of the Islamic Holiday of Eid al-Adha. However, the addition of antioxidants into the sunscreen resulted in a significant 78% reduction in reactive oxygen species. One downside of this study is that iron oxide wasn’t the only different ingredient in the sunscreen. The non-ionizing UV spectrum has a wavelength shorter than that of visible light but longer than an X-ray (100 nanometers [nm] to 400nm) and is categorized based on intensity: . Mahmoud, B., Hexsel, C., Hamzavi, I. Battie, C., Jitsukawa, S., Bernerd, F., Del Bino, S., Marionnet, C. & Verschoore, M. (2014). Lakartidningen. Iron oxide is particularly good in combination with zinc oxide and can reduce the amount of UVA rays able to penetrate the skin to 1.5% [7]. Palm, M. & O’Donoghue, M. (2007). ‘Irradiation of skin with visible light induced reactive oxygen species and matrix-degrading enzymes’. This was much less than the amount of free radical production from UV radiation (67%) but still demonstrates that visible light can have damaging effects on human skin [10]. Will 5G Impact Our Cell Phone Plans (or Our Health?! Visible light dangers? The goal of this review is to highlight the effects of visible light on the skin. & Liebel, F. (2018). Also referred to as high energy visible (HEV) light, due to the fact that blue light photons have higher energy than other wavelengths in the visible light spectrum, excessive blue light exposure can lead to cell abnormalities and cell death, Other research has suggested that iron oxide protection goes beyond just blue light and longer UVA radiation and is effective at absorbing all wavelengths of visible light. 2013 Jan;12(1):54-64. doi: 10.1039/c2pp25152c. USA.gov.  |  Clin Cosmet Investig Dermatol. Furthermore, a number of photodermatoses have an action spectrum in the visible light range, even though most of the currently available sunscreens offer, if any, weak protection against visible light.

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