Also of note, there are mineral-based sunscreens – like those made with zinc oxide or titanium oxide – and chemical sunscreens. “Chemicals can affect the environment, they can affect your skin – they can cause rashes,” Dellavalle says. “So only when you’re planning on being outdoors and cannot wear clothing or use one of these other options to protect your skin, then you should be using sunscreen.” So if you’re going swimming, you’ll want to be choosy about the sunscreen you use – and know how they differ.
值得注意的是,有些防晒霜含矿物质——比如含有氧化锌或氧化钛的防晒霜——化学防晒霜。“化学物会污染环境,也会对你的皮肤造成影响——引起皮疹,”德拉瓦勒说道。“所以,只有在你准备外出且无法穿防晒衣或使用其它防晒方法保护皮肤时,才应该涂防晒霜。”如果你准备去游泳,应仔细挑选防晒霜,了解它们的差别。
Particularly for those who have sensitive skin, a mineral-based or so-called physical sunscreen is a good choice. But with chemical sunscreens the formulation is more elegant and tends to be easier to rub in, says Dr. Arisa Ortiz, an assistant clinical professor of dermatology at the University of California San Diego and director of laser and cosmetic dermatology at UC San Diego Health. “So if you’re sensitive or have many allergies, then I would opt for the physical sunscreen,” she says. “Otherwise if you don’t like that white residue, the chemical sunscreen would be better.”
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