Tips

Crema solare

Introduction

Every year, when summer arrives, we expose ourselves to the sun with the aim of conquering a tan worthy of the Riace bronzes. Few remember that the tan produced by skin contact with the sun’s rays can also cause very serious damage to our health, including malignant skin tumors or melanomas. To limit this damage, we resort to the use of sun creams, products designed to protect the skin from excessive solar radiation and from erythema and sunburn. Sun creams therefore represent a protection for skin exposed to the sun and an adjuvant in obtaining a risk-free tan. In reality, sun creams do not 100% protect the skin from damage from the sun’s rays, as also confirmed by numerous studies on the subject, this is why the old wording «total protection» has disappeared from the nomenclature of creams, replaced with the indication of the SPF, acronym of the Sun Protection Factor, that is the maximum and minimum degree of sun protection that that particular sunscreen can offer. Choosing the most suitable sunscreen for your skin type is a must for all those who decide to spend days in the sun, on the beach or in the mountains. The cream must contain the protection factor suitable for your skin type, but also substances that once absorbed by the skin do not give rise to allergic reactions or other toxic phenomena. that is, the maximum and minimum degree of sun protection that that particular sunscreen can offer. Choosing the most suitable sunscreen for your skin type is a must for all those who decide to spend days in the sun, on the beach or in the mountains. The cream must contain the protection factor suitable for your skin type, but also substances that once absorbed by the skin do not give rise to allergic reactions or other toxic phenomena. that is, the maximum and minimum degree of sun protection that that particular sunscreen can offer. Choosing the most suitable sunscreen for your skin type is a must for all those who decide to spend days in the sun, on the beach or in the mountains. The cream must contain the protection factor suitable for your skin type, but also substances that once absorbed by the skin do not give rise to allergic reactions or other toxic phenomena.

Features


Sunscreen is a cosmetic product composed of fluid substances, with a protective function, which once spread on the skin protect it, in part, from the action of the sun’s rays. All sun creams, even those defined as «organic» or natural, do not offer complete and total protection from UV rays, or from ultraviolet radiation emanating from the sun. These rays are divided into UV-A, UV-B and UV-C. To reach the earth and our skin are the UVA and UVB, while the UVC are totally absorbed by the atmosphere. The UVBs are active during the hottest hours of the day, they do not penetrate deeply into the skin, but they are able to generate a new production of melanin causing a tan. Excessive exposure to UVB rays also creates rashes and sunburn. UVA rays, intense chin of UVB, they are actually the most dangerous, because they irradiate our body throughout the day, penetrating deeply into the skin and causing cellular aging phenomena with the production of free radicals. Uva rays, unlike UVB, are also able to overcome the screen of car windows, with a much higher irradiation and penetration capacity than other UV rays. Sun creams, to best perform their protective function, contain the so-called «filters», substances capable of capturing and dispersing UV rays. For some years it has been seen that sun creams partially protect against UVB rays, but not UVA rays, which can continue to strike the skin silently and without anyone noticing any damage done to the epithelial cells. To ensure a decent protection, sun creams must contain both filters against UV rays and filters against UV rays. When buying a sunscreen, you must therefore pay close attention to the type of filters contained in the product.

Sunscreen filters


The sunscreen, as already mentioned in the previous paragraph, contains a mixture of substances designed to protect the skin from the action of UV rays. The protection from these rays is partially guaranteed by the sun filters contained in the cream. These filters can be chemical or physical. The former have the function of absorbing and dispersing the sun’s rays as soon as they arrive on the skin. Chemical filters, in contact with the skin, increase the sensation of heat and can develop other harmful substances. Physical filters do not absorb the sun’s rays, but reject them completely without absorbing them. The most commonly used physical filter in sunscreens is titanium dioxide, which does not cause sensations of heat on the skin and offers greater protection than chemical filters. The disadvantage of titanium dioxide is that once it comes into contact with the sun’s rays it can favor the development of free radicals. In short, if you expose yourself without sunscreen you run some risks, but the same risks are also run if you use the wrong sunscreen. To reduce the disadvantages associated with sunscreens, you must choose the sunscreen that best suits your skin type and possibly produced with natural substances and filters that do not create allergy or the production of other toxic substances in the body.

How to choose


The sunscreen should be chosen according to your skin type. The coloring of the skin, hair and eyes is classified according to a scale of resistance to sunlight, a scale that is called «phototype». The phototype most sensitive to the action of UV rays is the one with light skin, blue eyes and red hair, while the more resistant one is the dark phototype, with black eyes and hair. The protection factor of the sunscreen grows according to the glow of the skin. Light-skinned individuals are more prone to sunburn and must use creams with the highest SPF, those with dark skin can choose sunscreen with medium SPF. The protection factor of the sunscreen is indicated in the purchase package with a number. Protection factors four to five, deemed ineffective, have now been almost completely abolished. It starts from a protection factor of 6 to get to a +50 or 60. However, it should be remembered that any sunscreen will never completely protect against the risks and damage caused by excessive and indiscriminate sun exposure. Sunscreens must also be free of allergenic and potentially irritating substances. In this case it is better to prefer creams without dyes, nickel, zinc oxide, parabens and synthetic fragrances. For small children, it is necessary to choose sunscreens with the maximum protection factor. Some suggest using maximum protection up to 4 years of age, and then switching to protection 20. Today, however, UV rays, due to the ozone hole,

Related posts

Deja una respuesta

Tu dirección de correo electrónico no será publicada. Los campos obligatorios están marcados con *

Botón volver arriba