Solar Radiation
Ultraviolet radiation UV-A: UVA, or long wave ultraviolet light, is capable of penetrating the connective tissue of the skin and can cause irreversible damage to the skin’s collagen and elastic fibres. This in turn causes premature aging and is responsible for some forms of skin cancer. Exposure to UVA radiation causes the skin to rapidly develop the type of pigmentation that generally disappears again after a period of around 24 hours.
UV-B: UVB, which is highly charged, ultraviolet medium wave radiation, is the type of radiation that causes skin both to tan and burn. This type of radiation penetrates the epidermis and is capable of causing irreversible damage to the genes in the skin cells that the body’s natural repair system is unable to repair. In the long-term, this can lead to permanent damage, give rise to the precursors to cancer and cause skin cancer.
UV-C: UVC radiation is largely filtered out by the ozone layer. However, protection against UVC radiation will become more important in the future due to the destruction of the ozone layer.
Infrared radiation: IR radiation causes the skin to heat up, leading the body to produce a lot of sweat in order to cool down.
Sunscreens: Sunscreens are an extension of the skin’s natural capacity to protect itself from harmful radiation. Sunscreens can be either physical or synthetic. Physical sunscreens contain micropigments that deflect sun radiation, while chemical filters act by absorbing the sun’s radiation and then releasing it as heat.
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