The sun, which increases its effect day by day with the arrival of summer, has many benefits for our health. It is a known fact that the biggest source of vitamin D, which is very important for bone health and immune system, is the sun. On the other hand, too much sun exposure speeds up the aging process and increases the risk of skin cancer. It is very important not to stay outside and to use protective creams during the hours when the rays fall perpendicular to the earth in order to protect from the harmful effects of the sun.
Are sun rays harmful?
Sun rays have many important effects on the skin. Especially in recent years, with the realization of the negative effects on the skin, the necessity of sun protection has emerged. There are UV (ultraviolet – ultraviolet) and IR (infrared-infrared) rays coming from the sun. Those with a direct effect on the skin are mostly UV rays. From UV rays to UVA, it can reach the dermis layer in the skin, has redness and cancer-causing effects. UVB is partially retained in the ozone layer, but it contains redness and cancer-causing factors such as UVA.
How should a good sunscreen be?
The most commonly used measure for protection from the sun is protective creams. Sunscreen creams are agents that reflect, absorb or emit UV rays that reach the skin. They are in the form of cream, gel, lotion, spray and contain various degrees of sun protection factors expressed by SPF.
A good sunscreen cream
- It should be broad spectrum, that is, effective against both UVA and UVB.
- It should not be toxic.
- It must be water and perspiration resistant.
- It should not irritate the skin.
- It should have a sufficient SPF, that is, a sun protection factor.
Sunscreen creams are divided into two as inorganic (physical) and organic (chemical) according to their mechanism of action. Physical sunscreens create a barrier on the skin and reflect UV rays and show their effect. They contain substances such as Zinc oxide, titanium dioxide, iron oxide. Chemical sunscreens act by absorbing UV rays, so they can cause photoallergic reactions. PABA derivatives, cinnamad esters, salicylate esters, benzophenones are included in this group.
How many minutes should you sunbathe per day to get vitamin D
There are 2 forms that are very important for the immune system and bone health. It consists of 2 forms, vitamin D2 and vitamin D3, the majority of which are supplied from the sun. Vitamin D3 is formed by the conversion of provitamin D in the skin to vitamin D3 under the influence of sun rays. Not only sunbathing is insufficient, but also vitamin D taken with nutrients is absorbed from the intestines. It is the most productive period in terms of vitamin D between March and October. It is the best time to take vitamin D in these months, especially between 11.00 and 15.00, when the sun’s rays are perpendicular to the earth. It is extremely unhealthy to stay in the sun for hours to get vitamin D. 15-20 minutes of sun, under the elbow, leg and below the knee are sufficient for vitamin D synthesis. In addition, to protect against the harmful effects of the sun, a protective product must be applied and repeated at certain intervals. The use of glasses and hats can provide protection, albeit limited, in the summer months against the harmful effects of the sun.
Do not stop using protective cream after tanning!
Although tanning is preferred aesthetically, it does not make the skin healthier. On the contrary, people who get too tanned are more exposed to the harmful effects of the sun. It is also inconvenient to enter the solarium for tanning. Solarium increases skin cancer and aging effects more. It is unfortunately not possible for the skin to get used to the sun’s rays after using the sunscreen cream and tanning for a certain period of time.