If you want to understand the proper sun tanning definition, you need to know some facts about sun-protection. All sun-protection means differ on a degree of skin protection from ultra-violet beams of a spectrum A (UVA) and B (UVB.) SPF is the sun-protection factor. Usually SPF factors oscillate within the limits of 2 - 30. As it is high, then it is possible to sunbathe longer without damage to your health. If you increase SPF factor of protection to 15-20 minutes you'll receive the recommended time of being in the sun with using of the given means (sun tanning definition should depend on it).
It is necessary to choose preparations depending on the natural swarthiness of your skin.
This means with that an SPF factor from 2 to 4 is for people with naturally swarthy skin, but also skin that is currently sunburned. An SPF factor of 5 up to10 will suit those people who sunbathe quickly and without burns, and also those who become sunburned during the day. An SPF factor of 11 up to 30 high protection) are for people with pale or very sensitive skin, and also for children. And always put on three layers of sun block as a safety measure.
The next recommendations can help in your sun tanning definition.
On your first day at the beach, it is not necessary to take solar baths in general. It is better to begin with open-air sunbathing under the protection of an umbrella or shade tree and alternate this with direct sunlight in 5 to 10 minute intervals and take frequent trips in the ocean. However, know that water does not protect you from the sun. Even on the contrary, in water the languished health-resort visitor receives even more irradiation.
Beach umbrellas, foliage of trees and clouds are also not a barrier from ultraviolet rays. Artful beams overtake health-resort visitors even in a shadow. The skin dries, becomes rough and wrinkled. In the top burnt layer inflame blood vessels. Under a skin scar-elastosis are formed. That's why it is not necessary to rush yourself with regards to sun exposure.
On the fourth day it is possible to let the body have unmerciful solar beams. But it is strict by the rules. At nine o'clock it is possible to sunbathe for 40 minutes. At eleven you should stay under the sun no more than for 20 minutes. From noon till four in the evening the sun becomes your enemy. After four hours it is possible to let yourself lie on a beach for 40 minutes more. But in the morning and in the afternoon do not forget about protective creams.
In the first three days you should only bathe and have a rest in the shadows of an umbrella on a beach. Having left the sea, it is not necessary to hasten to a shower - sea salt tones up a skin and strengthens your body.
The most reliable protection against harmful beams is a cream-filter for sunburn. Choosing a suitable bottle, it is necessary to search first of all for mark UVA - UVB. These letters mean, that the cream protects from ultra-violet beams of both types. The degree of protection (its name is "factor") is designated by a numerical figure.
Remember, children receive ultraviolet rays three times as quickly as an adult. And to be protected from harmful radiation, a children's body simply is not equipped without the help of a strong sun block. That's why it is necessary to put the cream on the skin of children with the highest factor of protection - 30. Kids younger than three years are generally prohibited to sunbathe.
Here may appear some questions concerning sun tanning definition which you are interested in. Questions like "What is better to choose: the beach, or the solarium? What can make better darkening of the skin?" This is a complicated question, which needs a doctor's consultation.