Sun protection is simply guarding a body from the adverse effects of sunlight. Aside from the hazards of heat, the sun poses the danger of sunburn, which can permanently damage the skin and cause skin cancer, precancerous changes in the skin, as well as premature wrinkling and signs of aging. Exposure to ultraviolet rays from the sun is a known risk factor for the development of both melanoma and non-melanoma skin cancers.
Sun damage of the skin, also known as photo damage can be either acute, as in a sunburn or more commonly, chronic, seen as gradual changes in the skin caused by an accumulation of sun exposure throughout one's life. Chronic photo damage results in either a cosmetic change in the skin's appearance called photo aging, or changes that are of medical and health concerns such as pre-cancerous lesions and skin cancers. The evidence is very strong that ultra-violet light is the cause of most of the changes that we consider to be associated with aging of the skin.
UVA rays cause skin aging and wrinkling and contribute to skin cancer, such as melanoma. Because UVA rays pass effortlessly through the ozone layer (the protective layer of atmosphere, or shield, surrounding the earth), they make up the majority of our sun exposure. Beware of tanning beds because they use UVA rays as well as UVB rays. A UVA tan does not help protect the skin from further sun damage; it merely produces color and a false sense of protection from the sun. Under the effects of UVA rays, intolerant or sun- sensitized skin releases an elevated quantity of neuromediators. Unpleasant reactions result: itching, or even localized spots. With time, skin can enter into a photo-sensitization cycle: sun allergy.
Sunscreen is any substance or material that protects the skin from UV radiation. Sunscreens are available in the forms of topical lotion, cream, ointment, gel, or spray that can be applied to the skin; a salve or stick that can be applied to the lips, nose, and eyelids that can be rubbed against the skin; sunglasses that protect the eyes; certain types of sun-protection clothing; and film screen that can be affixed to the windows of a car, room, or office. SPF, an abbreviation for sun-protection factor, is a number such as 15, 30, or 50 that indicates the degree of sunburn protection provided by sunscreens. SPF is related to the total amount of sun exposure rather than simply the length of sun exposure. It is a common mistake to assume that the duration of effectiveness of a sunscreen can be calculated simply by multiplying the SPF by the length of time it takes for him or her to suffer a burn without sunscreen, because the amount of sun exposure a person receives is dependent upon more than just the length of time spent in the sun. The amount of sun exposure depends upon a number of factors including the length of exposure, time of day, geographic location, and weather conditions.
Reach Pharmacy supplies SPF 50 anti-reaction sunscreen Associates 3 anti-UVA filters and Spirulina a sensitivity regulator active ingredient - to help regulate neuromediators release. Results: The sun intolerance chain reaction is limited; skin discomfort is controlled. Skin is hydrated, soft and uniform.
No comments:
Post a Comment