At present, it can take care of the skin from the sun, and avoid damage that would be unforgivable because now there are excellent products for your protection. The sun is not good or bad, friend or foe, it all depends how we deal with it. It is important to sunbathe and use sunscreen that our skin needs, too, must help the skin by consuming food in abundance carotenes, since they produce melanin, the substance of which depends on the pigmentation of the skin. The most important of these is the carrot. This food (draws better when ingested cooked) combined with fruits, are a perfect food to detoxify the body and thus break with cellulite.
The sun is not healthy or harmful in an absolute manner. Like anything in life is absolute. Everything depends on the type of skin (white / mate / brown / thick / thin), the intensity of the rays (time of year / place /: altitude and latitude / weather: wind, humidity, type of protection / frequency and duration of exposure to the sun.
When we speak of conduct for sunbathing, think of the noon of January at the beach: remember that children learn the same habits of their parents.
Before talking about levels and rates of sun protection, we will talk about what is solar radiation:
Solar radiation
The radiant energy is produced by the sun (Fig. 1) and artificial sources. Electromagnetic waves, ranging from very short-ray wavelengths called cosmic, via X-rays, the ultraviolet (UV), visible light, infrared up the airwaves. Those of our interest are the UVR between 280 nm to 400 nm.
The UVR is only 5% of the solar spectrum. But the strip is most important energy from the sun. They are divided into:
- Ultraviolet A (UVA) - Long-wavelength 315 / 400 nm.
Area tanning
- Ultraviolet B (UVB) - half wavelength 280 / 315 nm.
Area sunburn
- Ultraviolet C (UVC) - short-wavelength 100 / 280 nm
Zone changes (long term)
Fig. 1 .- The solar radiation have a high biological activity that produces significant changes in our skin from redness to cancer.
UVA pass through the glass and produce almost no redness, but they have great ability to pigment the skin. That’s why you tan when the sun gets in the car, or micro, even behind the windows.
They are the same UV lamps and sunbeds.
No erythema under the action of UVA, whatever the source that produces them, but penetrate deep. That’s why provoke a tan slower but more durable.
In the solar spectrum are blended with the rest of radiation, but prevail from the Amanco until the 10-11 hours, and at dusk from the 16 pm. In the future, and depending on the season.
Small amounts of infrared (RIR), which produce heat and erythema (redness), stimulate the circulation surface, which favors the production of melanin.
The UVB does not pass through the glass, is that it absorbs. Produce erythema and blistering. They make possible the synthesis of vitamin D in the skin, essential for life, That is why it is necessary to expose the baby to the sun a reasonable time, in plazas, parks or gardens of the fund.
It is not enough to give you the sun through the windows, glass, to absorb UVB radiation, does not permit the synthesis of vitamin D. The coup sun is a consequence of a long exposure to UVB (from 11 to 16 hours, in which predominates) and burn consistently.
An exhibition of one and a half hours, without good protection and when we are not yet bronzed, in the hours that abound UVB, produces blisters and fever, comparable with a second-degree burn or type AB (according to the classification of Benaïm) . Repeat exposure to the skin in these conditions, aggravated the injury blister, with the risk of scarring and cumulative damage that implies.
But this is what they do at many beaches, with the aim of quickly removed the white paper, colored office, which proclaims that work locked up. This is what must be avoided!
Fortunately, the presence of RIR alerts us, because heat and if we look at the signals they emit the skin, the damage was evident. These signals have to pay attention!.
The UVC, damaging the basal layer of the epidermis, where there are cells that then amount to the surface (more or less in 28 days). Produced photoaging, skin cancer, cataracts, immune problems. They are in small quantities in the solar spectrum, so it takes years of irradiation, to display its effect: this is the true meaning of “cumulative damage.”
They are detained by the atmosphere and the ozone layer. Therefore the reduction of ozone plunges us into the growing insecurity, to us, to animlaes, plants, the ecosystem.
Exposed skin from childhood, as we see in places, swimming pools and beaches-and youth, poorly or inadequately protected, damaged not only cumulative, but irreparable, already described.
But also:
- It is not capable of self his injuries.
- Decrease your sitema self to the sun.
- Premature aging, by a ratio of twenty or more years with respect to non-exposed (if you have any, compare).
But give it a soft tan is not harmful.
Quite the contrary.
UVA are beneficial, increase white blood cells (lymphocytes), which is why we feel strengthened in the spring, with more resistance.
Reasonable exposures to sunlight improves depressive states. In the skin, exposure to moderate, gradual and protected favors the decrease of seborrhea not irritable, has antiseptic effects that improve acne, psoriasis and other ailments (and we must consult a specialist for skin).
Are sufficient reasons to expose a little sun in the morning, either in town or on long walks on the beach or the mountains.