In Vitro Cytoprotective Study of X Sunscreen Against Blue Light

Abstract

Nowadays skin damage has been known to not only occur under ultraviolet exposure but also in the high energy visible (HEV) light called blue light that has a wavelength in the range of 400 to 500 nm (Coats et al., 2021). In fact, a paper stated that the effect of visible light exposure that can be emitted from any electronic device may cause hyperpigmentation, DNA damage, and oxidative stress that leads to skin aging (Campiche et al., 2020). Due to its proven risk of damaging the skin, some sunscreen products have claimed photoprotective capability for their product to not only be able to protect against ultraviolet exposure but also to protect the skin from exposure to blue light by reflecting and scattering the light. This increase in claims has been increasing alongside the current rise in online activity which results in increased usage of blue light-emitting electronic devices and exposure to blue light. Due to these increasing claims, there is a need to validate them through a scientifically proven and validated method, such as in vitro assay using immortalized keratinocyte cells called HaCat cells.