皮肤变黑,长色斑、皱纹都跟阳光中的紫外线有关。夏天,很多人穿上了防晒服。但防晒服真的能防晒吗?记者走访时发现,市场上的防晒衣鱼龙混杂,难以辨别真伪。商家都拿防紫外线作为噱头,而且对防晒衣的原理各有各的说法。到底防晒衣靠什么防晒呢?专家说,防晒衣的原理,是通过加入一些金属氧化物,把紫外线吸收。目前能够防紫外线的主要物质是二氧化钛,它是一种金属氧化物,呈白色粉末状,是防晒涂层的主要成分。 Darkening of the skin, long spots, wrinkles are related to the sun’s ultraviolet rays. In summer, many people wear sunscreen. But sunscreen really sunscreen it? Reporter interviewed found that the market sunscreen cohabitation, it is difficult to identify the authenticity. Businesses are taking anti-UV as a gimmick, but also the principle of sunscreen have their own argument. In the end sunscreen by what sunscreen it? Experts said the principle of sunscreen is through the addition of some metal oxides, the UV absorption. At present, the main substance that can prevent UV rays is titanium dioxide, which is a kind of metal oxide which is white powder and is the main component of sunscreen coating.