The sun is a source of health and beauty, but according to the frequency and duration of exposure to solar radiation, the effects may be favorable or not. Remember that the effect of the sun is not immediate and can cause some problems that we will detail below.
Red, red skin
The reddening of the skin after exposure to sun can reach take up to 24 hours to appear, since that is the time they need blood vessels to dilate and let get more blood to the cells affected by lightning . In addition, it is also what delays the skin in developing the " melanin ", that is the pigment that darkens our skin.
Radiation from the Sun and the ozone layer
The radiation of the Sun that is received on the surface of the Earth changes when it passes through the atmosphere. There are some radiations that are carriers of high energy content, such as gamma rays, UVC, UVB, etc. The effects of these radiations on humans depend on the energy, that is, on the ability to penetrate the skin.
The ozone layer is responsible to stop to a certain extent the radiation incompatible with our health, ultraviolet rays, thus preventing them from reaching the surface of the Earth and causing alterations that in some cases can be lethal. We are all aware of the deterioration permanently suffered by the ozone layer, although it is still very difficult to quantify it.
The penetration of radiation in our body
Solar radiation penetrates our skin according to the optical characteristics of the skin and the length of the radiation wave. There are four fundamental processes and they are reflection, diffraction, direct transmission and absorption. Tanning is a form of response of the skin to the radiations of the Sun , its capacity changes from one person to another and can develop different stages such as direct or indirect tanning.
Due to its strength and heat, the sun's rays also have the property of burning our hair , and together with the saline effect, the hair can become clear in a simple symptom that is being affected in a negative way. The ultraviolet rays alter the capillary material while discolor hair; later it will appear brittle and parched. Then: take care of the sun's rays!