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What is ultraviolet ray (UV)?
The wavelengths of the sun’s rays in the range of 280-400 nanometers are known as ultraviolet (UV) -A and -Brays. Exposure to these rays leads to the appearance of a sunburn that manifests with early redness and redness of the skin. In addition, skin cancers can cause harmful and dangerous effects, such as various sunspots, allergic symptoms, and the development of certain sunlight-triggered diseases, such as skin immune suppression and premature aging. The World Health Organization defined sun and artificial sun rays (solarium, solar lamps) as lam carcinogen yapay (cancer causing substance).
Is the amount of UV light associated with skin cancer development?
The total amount of ultraviolet radiation that is exposed to life-span and the number of sunburns, especially in childhood, are directly related to the risk of skin cancer development in adulthood. Tanning is caused by the increase of the amount of melanin in the skin (the pigment that gives the color to the skin) as a defense mechanism to prevent further damage due to UV damage of various cells in the skin. By the amount of increased melanin, the skin becomes darker and more UV radiation is prevented from being absorbed. However, this DNA damage is never fully repaired by the body and leads to the development of skin cancers. Children, especially children under 6 months of age, should not be exposed to direct sunlight as the skin of children is much more sensitive to sunlight.
Why should we protect the sun?
The goal of protection from the sun should not only prevent sunburn development, but also prevent the skin from changing color.
Measures to be taken for this purpose;
Avoid being outdoors between 10:00 and 16:00,
Choosing shade areas and using sunglasses with clothing and hats covering the body surface as broadly as possible,
Hats should be wide border to cover the neck and ears,
It is preferred that the garments be chosen from UV-resistant special products or from dark-colored, frequently woven linen and cotton fabrics that pass less than UV, or from fine-textured fabrics made of polyester, lycra, polypropylene,
Sunscreen products should also be used.
The above measures may reduce the risk of ultraviolet-related skin aging and skin cancer development.
This article Prepared by Deniz Akkaya.
You can contact our Dermatology Department for more information.
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Be careful when choosing sunscreen!
When choosing a sunscreen, be sure to have a minimum SPF of 30 or higher, a broad spectrum (UVB and UVA-effective) and water-resistant and such products should be preferred. The SPF value on sunscreens is the protection against UVB, which is mainly responsible for sunburn. A product with SPF 30 blocks 95-97% of UVB reaching the skin. Although UVB protection is not significantly increased, a product is considered to have increased UVF protection as its SPF value increases. There is no widely accepted numerical value for protection against UVA. The UVA logo on the product packaging indicates that the product provides adequate protection against UVA.
Chemical and Physical Protectors
Generally, sunscreen products (sunscreen etc.) can be divided into chemical (organic) and physical (inorganic, mineral) preservatives. Chemical preservatives are absorbed from the skin and react with the absorbed sunlight. Some of the chemical preservatives are UVB and some are protective against UVA.
Titanium dioxide and zinc oxide are physical solar filters. They are not absorbed from the skin, they form a thick, white layer on the skin and function by reflecting all of the sun’s rays around. In other words, they provide a wide spectrum of protection against both UVA and UVB. Eye contact or ingestion is not a serious problem, it is safer than other preservatives. They are considered the most suitable preservatives for children.
Although sunscreen creams are not recommended for infants under 6 months of age, physical sunscreen creams may be applied to areas not covered by clothing. Infants and children over 6 months old may be protected by chemical sunscreen creams for children or children. Products in the form of spray are not recommended for infants and children due to the risk of inhalation.
How to use sunscreen?
Sunscreen should be applied 15 minutes before sunbathing, ears and scalp, and application should be repeated every two hours. 2 mg product should be used in each 1 cm² skin area. In practice, the amount required for using the right amount of sunscreen is half a teaspoon for the face and 30g for the body. Expressions such as sonrası waterproof ve, uygulama all day protection c, c resistant to perspiration lan on the products should not be taken very seriously. In other words, sunscreen should not be applied only, but must be driven again and again. In addition, sunscreen products should be used not only to spend more time in the sun but in addition to physical measures to protect against sun damage.
Various speculations in the non-scientific environment about the side effects of sunscreen products have resulted in the emergence of products that claim to be er natural çev or konusunda organic lan in the sunscreen product market, although they are unproven and exaggerated. Many of these products sold with the SPF 50 label have actually been shown to have SPF8 protection. The content and effectiveness of the sunscreen products of reliable dermocosmetic brands sold in pharmacies are controlled by strict inspections and they do not contain the contents which are known to have harmful effects. No adverse effects known to be developed by the use of such products have been shown.
The synthesis of vitamin D, a hormone-vitamin with a wide range of important functions in our body, is carried out by the absorption of UVB rays from the skin. It is known that it has a protective effect on the development of various diseases as well as its positive effects on the skeletal system. On the other hand, the current approach to meeting the need for vitamin D is to provide with dietary or daily food supplements instead of getting it from the sun and skin.
Although it is thought that the vitamin D synthesis in the skin will be prevented by the use of sunscreen products, it has been shown that sufficient amount of vitamin D is produced in the individuals who use the protective products regularly from the sun. Only the face and arms exposed, 3 times a week, 10-15 minutes to stay in the sun with an adequate amount of vitamin D is synthesized. By exposure to the sun above these times, no more vitamin D synthesis occurs. In addition, since the UVB cannot pass through the skin in people who have dark skin or bronzed, vitamin D synthesis cannot be performed sufficiently.
In order to increase the synthesis of vitamin D, it should be avoided under long periods of unprotected sun. The American Academy of Dermatology considers that the need for vitamin D should be met by foods rather than the sun, and that nutrients should be taken with nutritional supplements.
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What causes crack after pregnancy?
Pregnancy is a special period in which there are many physical changes with an intense hormonal activity. In this process, skin changes and various rashes are frequently encountered. Striae, also known as striae, is one of the paintings we see as common in pregnancy and cosmetically disturbing. More than 50 percent of pregnant women are seen. It usually occurs on the belly, on the hips, on the legs and on the breast.
The exact cause of cracks is not known, but it is thought to be related to genetic factors, hormones and mechanical stress. Strias are initially in the form of bands ranging from pink to purple. In this area, there is a decrease in the attenuation of the connective tissue, elastin and collagen fibers. They become increasingly faint and less visible. They continue after birth and often do not fully regress.
Consult your doctor when your cracks look pink-purple!
When the cracks reach white, ivory color, it is more difficult to reach the result. Therefore, it is recommended to intervene at the stage where pink-purple appearance is present. There are many moisturizing and nourishing cream with a high concentration of herbal ingredients. However, there is no definitive data on their effectiveness. Although successful results are reported with creams containing vitamin A derivative or retinoic acid locally, it is not appropriate to use such creams during breastfeeding. Various creams containing ascorbic acid (vitamin C), hyliulonic acid and glycolic acid (fruit acids) can also be useful in the early period.
The most effective treatment of cracks after pregnancy: Laser
The most effective method for the removal of cracks after pregnancy is laser treatments. Successful results are obtained in newly formed pink-purple lesions with pulse dye lasers (dye laser). Fractional lasers are used in both new and old strias. With laser energy, small microscopic damages are created in the upper and lower layers of the skin, and regeneration by secreted growth factors is achieved during healing.
Again in the microneaching method, the skin can be damaged by small needles, and the appearance of regeneration and striae can be reduced. It is aimed to increase the synthesis of collagen and elastin by giving simultaneous radiofrequency energy with needling in needle radiofrequency devices used in recent years.
Applications are performed in sessions. PRP, hydrolytic acid and mesotherapy can be used to increase efficacy. Since early initiation of treatment increases the chances of success, it will be an appropriate approach to start right postpartum in the strias developing during pregnancy without delay.
This article Prepared by Banu Taşkın.
You can contact our dermatology department for more information.
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