The sun, which is the source of life, has both positive and negative aspects for our skin.
Beneficial effects of the sun on the skin:
-Sun rays activate active D, the precursor of vitamin D in the skin. converts it into vitamin. Vitamin D is effective on bone development by adjusting the calcium balance in the human body. Because of this feature, sunlight is very important, especially for children in the developmental age and people over the age of 60. In order to achieve this, short-term sun exposure (30 minutes) of small areas of the skin that are exposed to the sun during the day (such as face, hands, arms, legs) will be sufficient.
-Sunlight has healing properties in some diseases such as psoriasis.
Harmful effects of the sun on the skin:
-Ultraviolet rays cause acute and chronic biological changes on the skin. It causes side effects such as sunburn, allergic reactions, spotting and skin thickening in the acute period, and skin aging and skin cancers after repeated exposure in the chronic period.
In skin diseases exacerbated by the sun (porphyria, solar urticaria, polymorphous light reaction). Exposure to sunlight (such as DLE, rosacea, actinic prurigo) initiates or exacerbates attacks.
UV Rays
Ultraviolet C
The most harmful type of rays, almost all of which are retained by the ozone layer. . It is also used for sterilization purposes in operating rooms.
UVB
It stimulates the production of new melanin and releases it into the skin.
It causes serious damage to DNA bands.
It causes mole formation and some skin cancers. It causes skin types (except melanoma).
It causes skin aging (much less than UVA).
By stimulating the formation of Vitamin D, it protects against diseases and, ironically, skin and other cancers.
It causes sunburn more easily than UVA, but a moderate dose can be healthy.
It is blocked by almost all sunscreens (click for Use of Sunscreens).
UVA
It ensures the release of melanin previously produced in melanocytes.
It causes rapid aging of the skin.
It cannot be prevented by many sunscreens, but it With good luck, it can be prevented to some extent.
Sun rays can also cause freckle formation by causing melanin pigment accumulation.
In addition, sun rays damage the functioning of the skin's self-renewal system and thus increase the risk of skin cancer.
/> What Should We Do to Protect from Sun Rays?
Things to consider regarding protection from sun rays:
The hours between 10.00 and 17.00, when the sun's rays come the steepest and contain the most harmful rays. One should not go out in the sun as long as it is possible.
When going out in the sun, light-reflective clothing should be worn that can protect the skin from sunlight as much as possible.
Sunglasses that do not transmit UV light should be used when going out in the sun. It should not be forgotten that eyes, like our skin, can burn from the sun. High factor (40 - 50 factor) sun protection creams can be used. A sunscreen can only protect our skin from the sun for 2.5-3 hours. There is no such thing as healthy tanning. Tanning is already a response of the body to sunlight. One should not stay under the sun for hours to get a tan.
Children, the elderly, white-skinned people, patients, and those with moles need more protection.
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