How to protect the skin from the sun
In the beauty industry, there are 2 types of sunscreen: physical and chemical. The first can be found – zinc dioxide or titanium dioxide. These agents work on the skin surface and reflect radiation, do not dissolve in water, but leave the stains. Chemical filters penetrate the skin and absorb, depending on the composition, UVA- and UVB-rays are washed off with water, so they need to be applied every 1.5-2 hours.
There are also light sprays based on thermal water; means based on cerium, microparticles of which work as physical and chemical filters. Some vegetable oils have a natural protective factor – for example, pongamia oil. It contains polyunsaturated fatty acids, important in the active sun, and does not violate seboregulation. There are liquid two-phase means that protect both from ultraviolet radiation and from infrared (thermal) radiation. They are imperceptible and can serve as a base for make-up.
Not so long ago it was believed that Sanskrin should be applied to moistened skin. Today, sunscreen products, especially for luxury brands, combine moisturizing, anti-aging, regenerating and detox care. And thanks to the requirements of the Office of Food and Drug Administration (FDA), today almost all sunscreens filter UVA rays (this is indicated by the marking PA + on the package).
It does not make sense to use means with a security factor below 30: this is inefficient (even SPF 30 neutralizes 94% of the beams). You can not use the printed Sanskrit in the next season: it loses its effectiveness. Do not think that cosmetics with SPF completely protect: to make it work, you need a very dense layer of the product – and re-applying every two hours (with a full de-makeup). It is better, like Japanese women, to apply Sanskrin in two layers: when one is absorbed, “close” it next – and only then use the tone.
While the revolution in the Sanskrin did not happen, so do not stay long in the sun, choose a shadow, wear glasses, hats and clothes with a long sleeve.