Visible light can induce the generation of singlet oxygen and can cause oxidative stress,
especially in melanocytes due to melanin photosensitization. Currently, there is no organic …

Skin cells can respond to UVB-induced damage by counteracting it through antioxidant
activation and DNA repair mechanisms or, when damage is massive by undergoing …

In this study, we compared the effects of sunscreens and antioxidants on reconstructed
epidermis made with or without melanocytes 24 h after UVB, UVA or UVA+ B irradiation. For …

Melanins have been associated with the development of melanoma and its resistance to
photodynamic therapy (PDT). Singlet molecular oxygen (1O2), which is produced by …

The skin possesses an elaborate antioxidant defences system to deal with UV-induced
oxidative stress. However, excessive exposure to UV can overwhelm the cutaneous …

Protecting human skin from sun exposure is a complex issue that involves unclear aspects
of the interaction between light and tissue. A persistent misconception is that visible light is …

BACKGROUND: In the recent years, the use of natural antioxidants as
photochemoprotective agents against skin damages produced by ultraviolet radiation …

Long term exposure to solar ultraviolet B (UVB) radiation is one of the primary factors of
premature skin aging and is referred to as photoaging. Also, mammalian skin exposed to …

Due to changes in human lifestyle (expanded sunbathing, the use of solaria, etc.) and, most
importantly, increasing lifetime and thus higher cumulative exposure to solar radiation, skin …

Ultraviolet radiation (UVR) has been implicated as a major environmental factor in the
pathogenesis of photoaging and skin cancers including melanoma. Hypermelanosis …