Solar urticaria (SU) is a rare skin condition characterized by hives, redness, and swelling of the skin. It is considered to be a form of light sensitivity and can result in pain and discomfort. It is caused by exposure to ultraviolet light and sometimes visible light. If you are susceptible you may even develop SU through light clothing. Researchers…
Polymorphous light eruption, or PLE, is the most common skin disease caused by sunlight. It is also called polymorphic light eruption (PMLE). Other variants include juvenile spring eruption and benign summer light eruption. PLE is not the same as sunburn. PLE arises spontaneously in people who are sensitive to ultraviolet light and…
What Is Grape Seed Extract? Grapes have been cultivated and eaten for a long time. But grapes, along with other parts of the Vitis vinifera plant such as the leaves and sap, have also been used in traditional medicine in Europe for thousands of years. From the Egyptians to the ancient Greeks, the healing power […]
There are many complicated implications of climate change, but one consequence that has been indisputably measured is the depletion of the ozone layer: the part of the atmosphere that protects us from cosmic radiation. You can argue about what exactly caused it, but not that it has happened. The depletion of the ozone layer has […]
The sun emits radiation—in the form of electromagnetic rays—which reaches you here on earth. While the visible part of this spectrum lights up your world, other parts of the spectrum including ultraviolet B (UVB) and ultraviolet A (UVA) have varying effects. UVB rays cause you to tan and burn, and also stimulate the production of […]
